Tests cleanup (take 2)

27 files changed, 2593 insertions, 1936 deletions

diff --git a/unit-tests/function/call.test b/unit-tests/function/call.test
index c9ef49c..e17c247 100644
--- a/unit-tests/function/call.test
+++ b/unit-tests/function/call.test
@@ -109,14 +109,11 @@ $* <'$bogus([uint64] 123)' 2>>EOE != 0
 buildfile:1:2: error: unmatched call to bogus(uint64)
 EOE
 
-#\
-@@ TMP
 : print-call-2
 :
 $* <'$bogus(abc, [uint64] 123)' 2>>EOE != 0
 buildfile:1:2: error: unmatched call to bogus(<untyped>, uint64)
 EOE
-#\
 
 : print-fovl
 :
diff --git a/unit-tests/lexer/comment.test b/unit-tests/lexer/comment.test
index 025b0a2..6840219 100644
--- a/unit-tests/lexer/comment.test
+++ b/unit-tests/lexer/comment.test
@@ -2,111 +2,138 @@
 # copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
 # license   : MIT; see accompanying LICENSE file
 
-# Single-line comments.
+: single-line
+:
+{
+  : only
+  :
+  $* <<EOI >>:EOO
+  # comment
+  EOI
+  EOO
 
-$* <<EOI >>:EOO # single-only
-# comment
-EOI
-EOO
+  : first
+  :
+  $* <<EOI >>EOO
+  # comment
+  foo
+  EOI
+  'foo'
+  <newline>
+  EOO
 
-$* <<EOI >>EOO # single-first
-# comment
-foo
-EOI
-'foo'
-<newline>
-EOO
+  : last
+  :
+  $* <<EOI >>EOO
+  foo
+  # comment
+  EOI
+  'foo'
+  <newline>
+  EOO
 
-$* <<EOI >>EOO # single-last
-foo
-# comment
-EOI
-'foo'
-<newline>
-EOO
+  : few
+  :
+  $* <<EOI >>EOO
+  foo
+  # comment
+  # comment
+  EOI
+  'foo'
+  <newline>
+  EOO
 
-$* <<EOI >>EOO # single-few
-foo
-# comment
-# comment
-EOI
-'foo'
-<newline>
-EOO
+  : cont
+  :
+  $* <<EOI >>EOO
+  foo
+  # comment\\
+  bar
+  EOI
+  'foo'
+  <newline>
+  'bar'
+  <newline>
+  EOO
 
-$* <<EOI >>EOO # single-cont
-foo
-# comment\\
-bar
-EOI
-'foo'
-<newline>
-'bar'
-<newline>
-EOO
+  : same
+  :
+  $* <<EOI >>EOO
+  foo # comment
+  bar # comment
+  EOI
+  'foo'
+  <newline>
+  'bar'
+  <newline>
+  EOO
+}
 
-$* <<EOI >>EOO # single-same
-foo # comment
-bar # comment
-EOI
-'foo'
-<newline>
-'bar'
-<newline>
-EOO
+: multi-line
+:
+{
+  : only
+  :
+  $* <<EOI >>:EOO
+  #\
+  comment
+  comment
+  #\
+  EOI
+  EOO
 
-# Multi-line comments.
-#
+  : empty
+  :
+  $* <<EOI >>:EOO
+  #\
+  #\
+  EOI
+  EOO
 
-$* <<EOI >>:EOO # multi-only
-#\
-comment
-comment
-#\
-EOI
-EOO
+  : start-same
+  :
+  $* <<EOI >>EOO
+  foo #\
+  comment
+  comment
+  #\
+  EOI
+  'foo'
+  <newline>
+  EOO
 
-$* <<EOI >>:EOO # multi-empty
-#\
-#\
-EOI
-EOO
+  : end-same
+  :
+  $* <<EOI >>EOO
+  #\
+  comment
+  comment
+  foo #\
+  bar
+  EOI
+  'bar'
+  <newline>
+  EOO
 
-$* <<EOI >>EOO # multi-start-same
-foo #\
-comment
-comment
-#\
-EOI
-'foo'
-<newline>
-EOO
+  : end-not
+  :
+  $* <<EOI >>EOO
+  #\
+  comment
+  #\ not an end
+  foo #\
+  bar
+  EOI
+  'bar'
+  <newline>
+  EOO
 
-$* <<EOI >>EOO # multi-end-same
-#\
-comment
-comment
-foo #\
-bar
-EOI
-'bar'
-<newline>
-EOO
-
-$* <<EOI >>EOO # multi-end-not
-#\
-comment
-#\ not an end
-foo #\
-bar
-EOI
-'bar'
-<newline>
-EOO
-
-$* <<EOI 2>>EOE != 0 # multi-unterm
-#\
-comment
-EOI
-stdin:3:1: error: unterminated multi-line comment
-EOE
+  : unterm
+  :
+  $* <<EOI 2>>EOE != 0
+  #\
+  comment
+  EOI
+  stdin:3:1: error: unterminated multi-line comment
+  EOE
+}
diff --git a/unit-tests/lexer/quoting.test b/unit-tests/lexer/quoting.test
index 84818fc..a44d6af 100644
--- a/unit-tests/lexer/quoting.test
+++ b/unit-tests/lexer/quoting.test
@@ -11,81 +11,94 @@ $* <'foo' >>EOO
 <newline>
 EOO
 
-: single-comp
+: comp
 :
-$* <":'foo':" >>EOO
-:
-'foo' [S/C]
-:
-<newline>
-EOO
+{
+  : single
+  :
+  $* <":'foo':" >>EOO
+  :
+  'foo' [S/C]
+  :
+  <newline>
+  EOO
 
-: double-comp
-:
-$* <':"foo":' >>EOO
-:
-'foo' [D/C]
-:
-<newline>
-EOO
+  : double
+  :
+  $* <':"foo":' >>EOO
+  :
+  'foo' [D/C]
+  :
+  <newline>
+  EOO
 
-: single-empty-comp
-:
-$* <"''" >>EOO
-'' [S/C]
-<newline>
-EOO
+  : single-empty
+  :
+  $* <"''" >>EOO
+  '' [S/C]
+  <newline>
+  EOO
 
-: double-empty-comp
-:
-$* <'""' >>EOO
-'' [D/C]
-<newline>
-EOO
+  : double-empty
+  :
+  $* <'""' >>EOO
+  '' [D/C]
+  <newline>
+  EOO
+}
 
-: part-start-quoted
-: Token start already quoted
-:
-$* <'"$foo"' >>EOO
-'' [D/P]
-$ [D/C]
-'foo' [D/P]
-<newline>
-EOO
+: part
+{
+  : quoted
+  {
+    : start
+    : Token start already quoted
+    :
+    $* <'"$foo"' >>EOO
+    '' [D/P]
+    $ [D/C]
+    'foo' [D/P]
+    <newline>
+    EOO
 
-: part-end-quoted
-: Token end still quoted
-:
-$* <'"foo$"' >>EOO
-'foo' [D/P]
-$ [D/C]
-'' [D/P]
-<newline>
-EOO
+    : end
+    : Token end still quoted
+    :
+    $* <'"foo$"' >>EOO
+    'foo' [D/P]
+    $ [D/C]
+    '' [D/P]
+    <newline>
+    EOO
+  }
 
-: part-start-unquoted
-: Token starts with unquoted character
-:
-$* <'f"oo"' >>EOO
-'foo' [D/P]
-<newline>
-EOO
+  : unquoted
+  {
+    : start
+    : Token starts with unquoted character
+    :
+    $* <'f"oo"' >>EOO
+    'foo' [D/P]
+    <newline>
+    EOO
 
-: part-unquoted
-: Token continous with unquoted character
-:
-$* <'"fo"o' >>EOO
-'foo' [D/P]
-<newline>
-EOO
+    : end
+    : Token continous with unquoted character
+    :
+    $* <'"fo"o' >>EOO
+    'foo' [D/P]
+    <newline>
+    EOO
 
-: part-unquoted-escape
-: Token continous with unquoted escaped character
-:
-$* <'"fo"\"' >>EOO
-'fo"' [D/P]
-<newline>
-EOO
+    : escape
+    : Token continous with unquoted escaped character
+    :
+    $* <'"fo"\"' >>EOO
+    'fo"' [D/P]
+    <newline>
+    EOO
+  }
+}
 
 : mixed
 :
diff --git a/unit-tests/test/script/lexer/command-expansion.test b/unit-tests/test/script/lexer/command-expansion.test
index f113846..faae29d 100644
--- a/unit-tests/test/script/lexer/command-expansion.test
+++ b/unit-tests/test/script/lexer/command-expansion.test
@@ -1,134 +1,230 @@
+# file      : unit-tests/test/script/lexer/command-expansion.test
+# copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+
 test.arguments = command-expansion
 
-$* <:"0<+" >>EOO # in-pass-redirect
-'0'
-<+
-EOO
-
-$* <:"0 <+" >>EOO # arg-in-pass-redirect
-'0 '
-<+
-EOO
-
-$* <:"1>+" >>EOO # out-pass-redirect
-'1'
->+
-EOO
-
-$* <:"1 >+" >>EOO # arg-out-pass-redirect
-'1 '
->+
-EOO
-
-$* <:"0<-" >>EOO # in-null-redirect
-'0'
-<-
-EOO
-
-$* <:"0 <-" >>EOO # arg-in-null-redirect
-'0 '
-<-
-EOO
-
-$* <:"1>-" >>EOO # out-null-redirect
-'1'
->-
-EOO
-
-$* <:"1 >-" >>EOO # arg-out-null-redirect
-'1 '
->-
-EOO
-
-$* <:"1>&2" >>EOO # merge-redirect
-'1'
->&
-'2'
-EOO
-
-$* <:"1 >&2" >>EOO # arg-merge-redirect
-'1 '
->&
-'2'
-EOO
-
-$* <:"0<a b" >>EOO # in-str-redirect
-'0'
-<
-'a b'
-EOO
-
-$* <:"1>a b" >>EOO # out-str-redirect
-'1'
->
-'a b'
-EOO
-
-$* <:"0<:a b" >>EOO # in-str-nn-redirect
-'0'
-<:
-'a b'
-EOO
-
-$* <:"1>:a b" >>EOO # out-str-nn-redirect
-'1'
->:
-'a b'
-EOO
-
-$* <:"0<<E O I" >>EOO # in-doc-redirect
-'0'
-<<
-'E O I'
-EOO
-
-$* <:"1>>E O O" >>EOO # out-doc-redirect
-'1'
->>
-'E O O'
-EOO
-
-$* <:"0<<:E O I" >>EOO # in-doc-nn-redirect
-'0'
-<<:
-'E O I'
-EOO
-
-$* <:"1>>:E O O" >>EOO # out-doc-nn-redirect
-'1'
->>:
-'E O O'
-EOO
-
-$* <:"0<<<a b" >>EOO # in-file-redirect
-'0'
-<<<
-'a b'
-EOO
-
-$* <:"1>>>a b" >>EOO # out-file-redirect
-'1'
->>>
-'a b'
-EOO
-
-$* <:"1>>>&a b" >>EOO # out-file-app-redirect
-'1'
->>>&
-'a b'
-EOO
-
-$* <:"&file" >>EOO # cleanup-always
-&
-'file'
-EOO
-
-$* <:"&?file" >>EOO # cleanup-maybe
-&?
-'file'
-EOO
-
-$* <:"&!file" >>EOO # cleanup-never
-&!
-'file'
-EOO
+: pass-redirect
+:
+{
+  : in
+  :
+  $* <:"0<+" >>EOO
+  '0'
+  <+
+  EOO
+
+  : arg-in
+  :
+  $* <:"0 <+" >>EOO
+  '0 '
+  <+
+  EOO
+
+  : out
+  :
+  $* <:"1>+" >>EOO
+  '1'
+  >+
+  EOO
+
+  : arg-out
+  :
+  $* <:"1 >+" >>EOO
+  '1 '
+  >+
+  EOO
+}
+
+: null-redirect
+:
+{
+  : in
+  :
+  $* <:"0<-" >>EOO
+  '0'
+  <-
+  EOO
+
+  : arg-in
+  :
+  $* <:"0 <-" >>EOO
+  '0 '
+  <-
+  EOO
+
+  : out
+  :
+  $* <:"1>-" >>EOO
+  '1'
+  >-
+  EOO
+
+  : arg-out
+  :
+  $* <:"1 >-" >>EOO
+  '1 '
+  >-
+  EOO
+}
+
+: merge-redirect
+:
+{
+  : out
+  :
+  $* <:"1>&2" >>EOO
+  '1'
+  >&
+  '2'
+  EOO
+
+  : arg-out
+  :
+  $* <:"1 >&2" >>EOO
+  '1 '
+  >&
+  '2'
+  EOO
+}
+
+: str-redirect
+:
+{
+  : in
+  :
+  {
+    : newline
+    :
+    $* <:"0<a b" >>EOO
+    '0'
+    <
+    'a b'
+    EOO
+
+    : no-newline
+    :
+    $* <:"0<:a b" >>EOO
+    '0'
+    <:
+    'a b'
+    EOO
+  }
+
+  : out
+  :
+  {
+    : newline
+    :
+    $* <:"1>a b" >>EOO
+    '1'
+    >
+    'a b'
+    EOO
+
+    : no-newline
+    :
+    $* <:"1>:a b" >>EOO
+    '1'
+    >:
+    'a b'
+    EOO
+  }
+}
+
+: doc-redirect
+:
+{
+  : in
+  :
+  {
+    : newline
+    :
+    $* <:"0<<E O I" >>EOO
+    '0'
+    <<
+    'E O I'
+    EOO
+
+    : no-newline
+    :
+    $* <:"0<<:E O I" >>EOO
+    '0'
+    <<:
+    'E O I'
+    EOO
+  }
+
+  : out
+  :
+  {
+    : newline
+    :
+    $* <:"1>>E O O" >>EOO
+    '1'
+    >>
+    'E O O'
+    EOO
+
+    : no-newline
+    :
+    $* <:"1>>:E O O" >>EOO
+    '1'
+    >>:
+    'E O O'
+    EOO
+  }
+}
+
+: file-redirect
+:
+{
+  : in
+  :
+  $* <:"0<<<a b" >>EOO
+  '0'
+  <<<
+  'a b'
+  EOO
+
+  : out
+  :
+  $* <:"1>>>a b" >>EOO
+  '1'
+  >>>
+  'a b'
+  EOO
+
+  : out-app
+  :
+  $* <:"1>>>&a b" >>EOO
+  '1'
+  >>>&
+  'a b'
+  EOO
+}
+
+: cleanup
+:
+{
+  : always
+  :
+  $* <:"&file" >>EOO
+  &
+  'file'
+  EOO
+
+  : maybe
+  :
+  $* <:"&?file" >>EOO
+  &?
+  'file'
+  EOO
+
+  : never
+  :
+  $* <:"&!file" >>EOO
+  &!
+  'file'
+  EOO
+}
diff --git a/unit-tests/test/script/lexer/command-line.test b/unit-tests/test/script/lexer/command-line.test
index 0040cfe..8a73b3d 100644
--- a/unit-tests/test/script/lexer/command-line.test
+++ b/unit-tests/test/script/lexer/command-line.test
@@ -1,134 +1,187 @@
+# file      : unit-tests/test/script/lexer/command-line.test
+# copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+
 test.arguments = command-line
 
-$* <"cmd;" >>EOO # semi
-'cmd'
-;
-<newline>
-EOO
-
-$* <"cmd ;" >>EOO # semi-separated
-'cmd'
-;
-<newline>
-EOO
-
-$* <";" >>EOO # semi-only
-;
-<newline>
-EOO
-
-$* <"cmd: dsc" >>EOO # colon
-'cmd'
+: semi
+{
+  : immediate
+  :
+  $* <"cmd;" >>EOO
+  'cmd'
+  ;
+  <newline>
+  EOO
+
+  : separated
+  :
+  $* <"cmd ;" >>EOO
+  'cmd'
+  ;
+  <newline>
+  EOO
+
+  : only
+  :
+  $* <";" >>EOO
+  ;
+  <newline>
+  EOO
+}
+
+: colon
 :
-'dsc'
-<newline>
-EOO
-
-$* <"cmd :dsc" >>EOO # colon-separated
-'cmd'
+{
+  : immediate
+  :
+  $* <"cmd: dsc" >>EOO
+  'cmd'
+  :
+  'dsc'
+  <newline>
+  EOO
+
+  : separated
+  :
+  $* <"cmd :dsc" >>EOO
+  'cmd'
+  :
+  'dsc'
+  <newline>
+  EOO
+
+  : only
+  :
+  $* <":" >>EOO
+  :
+  <newline>
+  EOO
+}
+
+: redirect
 :
-'dsc'
-<newline>
-EOO
-
-$* <":" >>EOO # colon-only
+{
+  : pass
+  :
+  $* <"cmd <+ 1>+" >>EOO
+  'cmd'
+  <+
+  '1'
+  >+
+  <newline>
+  EOO
+
+  : null
+  :
+  $* <"cmd <- 1>-" >>EOO
+  'cmd'
+  <-
+  '1'
+  >-
+  <newline>
+  EOO
+
+  : merge
+  :
+  $* <"cmd 1>&2" >>EOO
+  'cmd'
+  '1'
+  >&
+  '2'
+  <newline>
+  EOO
+
+  : str
+  :
+  $* <"cmd <a 1>b" >>EOO
+  'cmd'
+  <
+  'a'
+  '1'
+  >
+  'b'
+  <newline>
+  EOO
+
+  : str-nn
+  :
+  $* <"cmd <:a 1>:b" >>EOO
+  'cmd'
+  <:
+  'a'
+  '1'
+  >:
+  'b'
+  <newline>
+  EOO
+
+  : doc
+  :
+  $* <"cmd <<EOI 1>>EOO" >>EOO
+  'cmd'
+  <<
+  'EOI'
+  '1'
+  >>
+  'EOO'
+  <newline>
+  EOO
+
+  : doc-nn
+  :
+  $* <"cmd <<:EOI 1>>:EOO" >>EOO
+  'cmd'
+  <<:
+  'EOI'
+  '1'
+  >>:
+  'EOO'
+  <newline>
+  EOO
+
+  : file
+  :
+  $* <"cmd <<<in >>>out 2>>>&err" >>EOO
+  'cmd'
+  <<<
+  'in'
+  >>>
+  'out'
+  '2'
+  >>>&
+  'err'
+  <newline>
+  EOO
+}
+
+: cleanup
 :
-<newline>
-EOO
-
-$* <"cmd <+ 1>+" >>EOO # pass-redirect
-'cmd'
-<+
-'1'
->+
-<newline>
-EOO
-
-$* <"cmd <- 1>-" >>EOO # null-redirect
-'cmd'
-<-
-'1'
->-
-<newline>
-EOO
-
-$* <"cmd 1>&2" >>EOO # merge-redirect
-'cmd'
-'1'
->&
-'2'
-<newline>
-EOO
-
-$* <"cmd <a 1>b" >>EOO # str-redirect
-'cmd'
-<
-'a'
-'1'
->
-'b'
-<newline>
-EOO
-
-$* <"cmd <:a 1>:b" >>EOO # str-nn-redirect
-'cmd'
-<:
-'a'
-'1'
->:
-'b'
-<newline>
-EOO
-
-$* <"cmd <<EOI 1>>EOO" >>EOO # doc-redirect
-'cmd'
-<<
-'EOI'
-'1'
->>
-'EOO'
-<newline>
-EOO
-
-$* <"cmd <<:EOI 1>>:EOO" >>EOO # doc-nn-redirect
-'cmd'
-<<:
-'EOI'
-'1'
->>:
-'EOO'
-<newline>
-EOO
-
-$* <"cmd <<<in >>>out 2>>>&err" >>EOO # file-redirect
-'cmd'
-<<<
-'in'
->>>
-'out'
-'2'
->>>&
-'err'
-<newline>
-EOO
-
-$* <"cmd &file" >>EOO # cleanup-always
-'cmd'
-&
-'file'
-<newline>
-EOO
-
-$* <"cmd &?file" >>EOO # cleanup-maybe
-'cmd'
-&?
-'file'
-<newline>
-EOO
-
-$* <"cmd &!file" >>EOO # cleanup-never
-'cmd'
-&!
-'file'
-<newline>
-EOO
+{
+  : always
+  :
+  $* <"cmd &file" >>EOO
+  'cmd'
+  &
+  'file'
+  <newline>
+  EOO
+
+  : maybe
+  :
+  $* <"cmd &?file" >>EOO
+  'cmd'
+  &?
+  'file'
+  <newline>
+  EOO
+
+  : never
+  :
+  $* <"cmd &!file" >>EOO
+  'cmd'
+  &!
+  'file'
+  <newline>
+  EOO
+}
diff --git a/unit-tests/test/script/lexer/description-line.test b/unit-tests/test/script/lexer/description-line.test
index 0f70e77..6b160c0 100644
--- a/unit-tests/test/script/lexer/description-line.test
+++ b/unit-tests/test/script/lexer/description-line.test
@@ -1,20 +1,32 @@
+# file      : unit-tests/test/script/lexer/description-line.test
+# copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+
 test.arguments = description-line
 
-$* <" foo  bar " >>EOO # full
+: full
+:
+$* <" foo  bar " >>EOO
 ' foo  bar '
 <newline>
 EOO
 
-$* <"  " >>EOO # space
+: space
+:
+$* <"  " >>EOO
 '  '
 <newline>
 EOO
 
-$* <"" >>EOO # empty
+: empty
+:
+$* <"" >>EOO
 <newline>
 EOO
 
-$* <:"foo" >>EOO 2>>EOE != 0 # eof
+: eof
+:
+$* <:"foo" >>EOO 2>>EOE != 0
 'foo'
 EOO
 stdin:1:4: error: expected newline at the end of description line
diff --git a/unit-tests/test/script/lexer/first-token.test b/unit-tests/test/script/lexer/first-token.test
index 8a6d39b..6044f53 100644
--- a/unit-tests/test/script/lexer/first-token.test
+++ b/unit-tests/test/script/lexer/first-token.test
@@ -1,68 +1,96 @@
+# file      : unit-tests/test/script/lexer/first-token.test
+# copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+
 # Note: this mode auto-expires after each token.
 #
 test.arguments = first-token
 
-$* <"." >>EOO # dot
+: dot
+:
+$* <"." >>EOO
 .
 <newline>
 EOO
 
-$* <";" >>EOO # semi
+: semi
+:
+$* <";" >>EOO
 ;
 <newline>
 EOO
 
-$* <":" >>EOO # colon
+: colon
+:
+$* <":" >>EOO
 :
 <newline>
 EOO
 
-$* <"{" >>EOO # lcbrace
+: lcbrace
+:
+$* <"{" >>EOO
 {
 <newline>
 EOO
 
-$* <"}" >>EOO # rcbrace
+: rcbrace
+:
+$* <"}" >>EOO
 }
 <newline>
 EOO
 
-$* <"+foo" >>EOO # setup
+: setup
+:
+$* <"+foo" >>EOO
 +
 'foo'
 <newline>
 EOO
 
-$* <"- foo" >>EOO # tdown
+: tdown
+:
+$* <"- foo" >>EOO
 -
 'foo'
 <newline>
 EOO
 
-$* <"foo+bar" >>EOO # plus-leading
+: plus-leading
+:
+$* <"foo+bar" >>EOO
 'foo+bar'
 <newline>
 EOO
 
-$* <"foo- x" >>EOO # minus-leading
+: minus-leading
+:
+$* <"foo- x" >>EOO
 'foo-'
 'x'
 <newline>
 EOO
 
-$* <"foo=" >>EOO # assign
+: assign
+:
+$* <"foo=" >>EOO
 'foo'
 '='
 <newline>
 EOO
 
-$* <"foo+=" >>EOO # append
+: append
+:
+$* <"foo+=" >>EOO
 'foo'
 '+='
 <newline>
 EOO
 
-$* <"foo=+" >>EOO # prepend
+: prepend
+:
+$* <"foo=+" >>EOO
 'foo'
 '=+'
 <newline>
diff --git a/unit-tests/test/script/lexer/second-token.test b/unit-tests/test/script/lexer/second-token.test
index 94cdf95..94ea441 100644
--- a/unit-tests/test/script/lexer/second-token.test
+++ b/unit-tests/test/script/lexer/second-token.test
@@ -1,47 +1,67 @@
+# file      : unit-tests/test/script/lexer/second-token.test
+# copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+
 # Note: this mode auto-expires after each token.
 #
 test.arguments = second-token
 
-$* <";" >>EOO # semi
+: semi
+:
+$* <";" >>EOO
 ;
 <newline>
 EOO
 
-$* <":" >>EOO # colon
+: colon
+:
+$* <":" >>EOO
 :
 <newline>
 EOO
 
-$* <"=foo" >>EOO # assign
+: assign
+:
+$* <"=foo" >>EOO
 =
 'foo'
 <newline>
 EOO
 
-$* <"+= foo" >>EOO # append
+: append
+:
+$* <"+= foo" >>EOO
 +=
 'foo'
 <newline>
 EOO
 
-$* <" =+ foo" >>EOO # prepend
+: prepend
+:
+$* <" =+ foo" >>EOO
 =+
 'foo'
 <newline>
 EOO
 
-$* <"foo=bar" >>EOO # assign-leading
+: assign-leading
+:
+$* <"foo=bar" >>EOO
 'foo=bar'
 <newline>
 EOO
 
-$* <"foo+= bar" >>EOO # append-leading
+: append-leading
+:
+$* <"foo+= bar" >>EOO
 'foo+='
 'bar'
 <newline>
 EOO
 
-$* <"foo =+bar" >>EOO # prepend-leading
+: prepend-leading
+:
+$* <"foo =+bar" >>EOO
 'foo'
 '=+bar'
 <newline>
diff --git a/unit-tests/test/script/lexer/variable-line.test b/unit-tests/test/script/lexer/variable-line.test
index 126fe54..c97981d 100644
--- a/unit-tests/test/script/lexer/variable-line.test
+++ b/unit-tests/test/script/lexer/variable-line.test
@@ -1,18 +1,28 @@
+# file      : unit-tests/test/script/lexer/variable-line.test
+# copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+
 test.arguments = variable-line
 
-$* <"cmd;" >>EOO # semi
+: semi
+:
+$* <"cmd;" >>EOO
 'cmd'
 ;
 <newline>
 EOO
 
-$* <"cmd ;" >>EOO # semi-separated
+: semi-separated
+:
+$* <"cmd ;" >>EOO
 'cmd'
 ;
 <newline>
 EOO
 
-$* <";" >>EOO # semi-only
+: semi-only
+:
+$* <";" >>EOO
 ;
 <newline>
 EOO
diff --git a/unit-tests/test/script/lexer/variable.test b/unit-tests/test/script/lexer/variable.test
index 0ecc6cc..15458f5 100644
--- a/unit-tests/test/script/lexer/variable.test
+++ b/unit-tests/test/script/lexer/variable.test
@@ -1,40 +1,70 @@
+# file      : unit-tests/test/script/lexer/variable.test
+# copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+
 # Test handling custom variable names ($*, $~, $NN).
 #
 test.arguments = variable
 
-$* <"*" >>EOO
-'*'
-<newline>
-EOO
-
-$* <"*abc" >>EOO
-'*'
-'abc'
-<newline>
-EOO
-
-$* <"~" >>EOO
-'~'
-<newline>
-EOO
-
-$* <"~123" >>EOO
-'~'
-'123'
-<newline>
-EOO
-
-$* <"0" >>EOO
-'0'
-<newline>
-EOO
-
-$* <"1abc" >>EOO
-'1'
-'abc'
-<newline>
-EOO
-
-$* <"10" 2>>EOE != 0
-stdin:1:1: error: multi-digit special variable name
-EOE
+: command
+:
+{
+  : only
+  :
+  $* <"*" >>EOO
+  '*'
+  <newline>
+  EOO
+
+  : followed
+  :
+  $* <"*abc" >>EOO
+  '*'
+  'abc'
+  <newline>
+  EOO
+}
+
+: working-dir
+:
+{
+  : only
+  :
+  $* <"~" >>EOO
+  '~'
+  <newline>
+  EOO
+
+  : followed
+  :
+  $* <"~123" >>EOO
+  '~'
+  '123'
+  <newline>
+  EOO
+}
+
+: arg
+:
+{
+  : only
+  :
+  $* <"0" >>EOO
+  '0'
+  <newline>
+  EOO
+
+  : followed
+  :
+  $* <"1abc" >>EOO
+  '1'
+  'abc'
+  <newline>
+  EOO
+
+  : multi-digit
+  :
+  $* <"10" 2>>EOE != 0
+  stdin:1:1: error: multi-digit special variable name
+  EOE
+}
diff --git a/unit-tests/test/script/parser/cleanup.test b/unit-tests/test/script/parser/cleanup.test
index 76614e3..ac4d949 100644
--- a/unit-tests/test/script/parser/cleanup.test
+++ b/unit-tests/test/script/parser/cleanup.test
@@ -1,3 +1,7 @@
+# file      : unit-tests/test/script/parser/cleanup.test
+# copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+
 : always
 :
 $* <<EOI >>EOO
@@ -30,20 +34,25 @@ EOI
 testscript:1:6: error: empty cleanup path
 EOE
 
-: missed-before-token
-: Path missed before command next token
+: missed-before
 :
-$* <<EOI 2>>EOE != 0
-cmd & >file
-EOI
-testscript:1:7: error: missing cleanup path
-EOE
+{
+  : token
+  :
+  : Path missed before command next token
+  :
+  $* <<EOI 2>>EOE != 0
+  cmd & >file
+  EOI
+  testscript:1:7: error: missing cleanup path
+  EOE
 
-: missed-before-end
-: Test path missed before end of command
-:
-$* <<EOI 2>>EOE != 0
-cmd &
-EOI
-testscript:1:6: error: missing cleanup path
-EOE
+  : end
+  : Test path missed before end of command
+  :
+  $* <<EOI 2>>EOE != 0
+  cmd &
+  EOI
+  testscript:1:6: error: missing cleanup path
+  EOE
+}
diff --git a/unit-tests/test/script/parser/command-if.test b/unit-tests/test/script/parser/command-if.test
index 4bbc016..ffe2c35 100644
--- a/unit-tests/test/script/parser/command-if.test
+++ b/unit-tests/test/script/parser/command-if.test
@@ -1,225 +1,506 @@
-: if-true
-:
-$* <<EOI >>EOO
-if true foo
-  cmd1
-  cmd2
-end
-EOI
-? true foo
-cmd1
-cmd2
-EOO
+# file      : unit-tests/test/script/parser/command-if.test
+# copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
 
-: if-false
+: if
 :
-$* <<EOI >>EOO
-if false foo
+{
+  : true
+  :
+  $* <<EOI >>EOO
+  if true foo
+    cmd1
+    cmd2
+  end
+  EOI
+  ? true foo
   cmd1
   cmd2
-end
-EOI
-? false foo
-EOO
+  EOO
 
-: ifn-true
-:
-$* <<EOI >>EOO
-if! true foo
+  : false
+  :
+  $* <<EOI >>EOO
+  if false foo
+    cmd1
+    cmd2
+  end
+  EOI
+  ? false foo
+  EOO
+
+  : not-true
+  :
+  $* <<EOI >>EOO
+  if! true foo
+    cmd1
+    cmd2
+  end
+  EOI
+  ? true foo
+  EOO
+
+  : not-false
+  :
+  $* <<EOI >>EOO
+  if! false foo
+    cmd1
+    cmd2
+  end
+  EOI
+  ? false foo
   cmd1
   cmd2
-end
-EOI
-? true foo
-EOO
+  EOO
 
-: ifn-false
-:
-$* <<EOI >>EOO
-if! false foo
-  cmd1
-  cmd2
-end
-EOI
-? false foo
-cmd1
-cmd2
-EOO
+  : without-command
+  :
+  $* <<EOI 2>>EOE != 0
+  if
+    cmd
+  end
+  EOI
+  testscript:1:3: error: missing program
+  EOE
+
+  : after-semi
+  :
+  $* -s <<EOI >>EOO
+  cmd1;
+  if true
+    cmd2
+  end
+  EOI
+  {
+    {
+      cmd1
+      ? true
+      cmd2
+    }
+  }
+  EOO
 
-: elif-true
-:
-$* <<EOI >>EOO
-if false
-  cmd1
-  cmd2
-elif true
-  cmd3
-  cmd4
-end
-EOI
-? false
-? true
-cmd3
-cmd4
-EOO
+  : setup
+  :
+  $* -s <<EOI >>EOO
+  +if true
+    cmd
+  end
+  EOI
+  {
+    ? true
+    cmd
+  }
+  EOO
 
-: elif-false
-:
-$* <<EOI >>EOO
-if false
-  cmd1
-  cmd2
-elif false
-  cmd3
-  cmd4
-end
-EOI
-? false
-? false
-EOO
+  : tdown
+  :
+  $* -s <<EOI >>EOO
+  -if true
+    cmd
+  end
+  EOI
+  {
+    ? true
+    cmd
+  }
+  EOO
+}
 
-: elifn-true
+: elif
 :
-$* <<EOI >>EOO
-if false
-  cmd1
-  cmd2
-elif! true
+{
+  : true
+  :
+  $* <<EOI >>EOO
+  if false
+    cmd1
+    cmd2
+  elif true
+    cmd3
+    cmd4
+  end
+  EOI
+  ? false
+  ? true
   cmd3
   cmd4
-end
-EOI
-? false
-? true
-EOO
+  EOO
 
-: elifn-false
-:
-$* <<EOI >>EOO
-if false
-  cmd1
-  cmd2
-elif! false
+  : false
+  :
+  $* <<EOI >>EOO
+  if false
+    cmd1
+    cmd2
+  elif false
+    cmd3
+    cmd4
+  end
+  EOI
+  ? false
+  ? false
+  EOO
+
+  : not-true
+  :
+  $* <<EOI >>EOO
+  if false
+    cmd1
+    cmd2
+  elif! true
+    cmd3
+    cmd4
+  end
+  EOI
+  ? false
+  ? true
+  EOO
+
+  : not-false
+  :
+  $* <<EOI >>EOO
+  if false
+    cmd1
+    cmd2
+  elif! false
+    cmd3
+    cmd4
+  end
+  EOI
+  ? false
+  ? false
   cmd3
   cmd4
-end
-EOI
-? false
-? false
-cmd3
-cmd4
-EOO
+  EOO
+
+  : without-if
+  :
+  $* <<EOI 2>>EOE != 0
+  cmd
+  elif true
+    cmd
+  end
+  EOI
+  testscript:2:1: error: 'elif' without preceding 'if'
+  EOE
 
-: else-true
+  : not-without-if
+  :
+  $* <<EOI 2>>EOE != 0
+  cmd
+  elif! true
+    cmd
+  end
+  EOI
+  testscript:2:1: error: 'elif!' without preceding 'if'
+  EOE
+
+  : after-else
+  :
+  $* <<EOI 2>>EOE != 0
+  if false
+    cmd
+  else
+    cmd
+  elif true
+    cmd
+  end
+  EOI
+  testscript:5:1: error: 'elif' after 'else'
+  EOE
+}
+
+: else
 :
-$* <<EOI >>EOO
-if false
-  cmd1
-  cmd2
-else
+{
+  : true
+  :
+  $* <<EOI >>EOO
+  if false
+    cmd1
+    cmd2
+  else
+    cmd3
+    cmd4
+  end
+  EOI
+  ? false
   cmd3
   cmd4
-end
-EOI
-? false
-cmd3
-cmd4
-EOO
+  EOO
 
-: else-false
-:
-$* <<EOI >>EOO
-if true
+  : false
+  :
+  $* <<EOI >>EOO
+  if true
+    cmd1
+    cmd2
+  else
+    cmd3
+    cmd4
+  end
+  EOI
+  ? true
   cmd1
   cmd2
-else
-  cmd3
-  cmd4
-end
-EOI
-? true
-cmd1
-cmd2
-EOO
+  EOO
 
-: if-chain
-:
-$* <<EOI >>EOO
-if false
-  cmd
-  cmd
-elif false
-  cmd
-  cmd
-elif false
-  cmd
-  cmd
-elif true
+  : chain
+  :
+  $* <<EOI >>EOO
+  if false
+    cmd
+    cmd
+  elif false
+    cmd
+    cmd
+  elif false
+    cmd
+    cmd
+  elif true
+    cmd1
+    cmd2
+  elif false
+    cmd
+    cmd
+  else
+    cmd
+    cmd
+  end
+  EOI
+  ? false
+  ? false
+  ? false
+  ? true
   cmd1
   cmd2
-elif false
-  cmd
-  cmd
-else
-  cmd
+  EOO
+
+  : command-after
+  :
+  $* <<EOI 2>>EOE != 0
+  if true
+    cmd
+  else cmd
+    cmd
+  end
+  EOI
+  testscript:3:6: error: expected newline instead of 'cmd'
+  EOE
+
+  : without-if
+  :
+  $* <<EOI 2>>EOE != 0
   cmd
-end
-EOI
-? false
-? false
-? false
-? true
-cmd1
-cmd2
-EOO
+  else
+    cmd
+  end
+  EOI
+  testscript:2:1: error: 'else' without preceding 'if'
+  EOE
 
-: nested-take
-:
-$* <<EOI >>EOO
-if true
-  cmd1
+  : after-else
+  :
+  $* <<EOI 2>>EOE != 0
   if false
     cmd
-  elif false
+  else
+    cmd
+  else
+    cmd
+  end
+  EOI
+  testscript:5:1: error: 'else' after 'else'
+  EOE
+}
+
+: end
+{
+  : without-if
+  :
+  $* <<EOI 2>>EOE != 0
+  cmd
+  end
+  EOI
+  testscript:2:1: error: 'end' without preceding 'if'
+  EOE
+
+  : before
+  {
+    : semi
+    :
+    $* -s <<EOI >>EOO
+    if true
+      cmd1
+    end;
+    cmd2
+    EOI
+    {
+      {
+        ? true
+        cmd1
+        cmd2
+      }
+    }
+    EOO
+
+    : command
+    :
+    $* <<EOI 2>>EOE != 0
     if true
       cmd
+    end cmd
+    EOI
+    testscript:3:5: error: expected newline instead of 'cmd'
+    EOE
+
+    : colon
+    :
+    $* -s <<EOI >>EOO
+    if true
+      cmd1
+      cmd2
+    end : test
+    EOI
+    {
+      : id:test
+      {
+        ? true
+        cmd1
+        cmd2
+      }
+    }
+    EOO
+  }
+}
+
+: nested
+:
+{
+  : take
+  :
+  $* <<EOI >>EOO
+  if true
+    cmd1
+    if false
+      cmd
+    elif false
+      if true
+        cmd
+      end
+    else
+      cmd2
     end
-  else
-    cmd2
+    cmd3
   end
+  EOI
+  ? true
+  cmd1
+  ? false
+  ? false
+  cmd2
   cmd3
-end
-EOI
-? true
-cmd1
-? false
-? false
-cmd2
-cmd3
-EOO
+  EOO
 
-: nested-skip
-:
-$* <<EOI >>EOO
-if false
-  cmd1
+  : skip
+  :
+  $* <<EOI >>EOO
   if false
-    cmd
-  elif false
-    if true
+    cmd1
+    if false
       cmd
+    elif false
+      if true
+        cmd
+      end
+    else
+      cmd2
     end
+    cmd3
   else
-    cmd2
+    cmd
   end
-  cmd3
-else
+  EOI
+  ? false
   cmd
-end
-EOI
-? false
-cmd
-EOO
+  EOO
+}
+
+: contained
+{
+  : semi
+  :
+  $* <<EOI 2>>EOE != 0
+  if
+    cmd;
+    cmd
+  end
+  EOI
+  testscript:2:3: error: ';' inside 'if'
+  EOE
+
+  : colon-leading
+  :
+  $* <<EOI 2>>EOE != 0
+  if
+    : foo
+    cmd
+  end
+  EOI
+  testscript:2:3: error: description inside 'if'
+  EOE
+
+  : colon-trailing
+  :
+  $* <<EOI 2>>EOE != 0
+  if
+    cmd : foo
+  end
+  EOI
+  testscript:2:3: error: description inside 'if'
+  EOE
+
+  : eos
+  :
+  $* <<EOI 2>>EOE != 0
+  if
+  EOI
+  testscript:2:1: error: expected closing 'end'
+  EOE
+
+  : scope
+  :
+  $* <<EOI 2>>EOE != 0
+  if
+    cmd
+    {
+    }
+  end
+  EOI
+  testscript:3:3: error: expected closing 'end'
+  EOE
+
+  : setup
+  :
+  $* <<EOI 2>>EOE != 0
+  if
+    +cmd
+  end
+  EOI
+  testscript:2:3: error: setup command inside 'if'
+  EOE
+
+  : tdown
+  :
+  $* <<EOI 2>>EOE != 0
+  if
+    -cmd
+  end
+  EOI
+  testscript:2:3: error: teardown command inside 'if'
+  EOE
+}
 
 : line-index
 :
@@ -255,258 +536,6 @@ EOI
 cmd foo
 EOO
 
-: semi-inside
-:
-$* <<EOI 2>>EOE != 0
-if
-  cmd;
-  cmd
-end
-EOI
-testscript:2:3: error: ';' inside 'if'
-EOE
-
-: colon-inside-leading
-:
-$* <<EOI 2>>EOE != 0
-if
-  : foo
-  cmd
-end
-EOI
-testscript:2:3: error: description inside 'if'
-EOE
-
-: colon-inside-trailing
-:
-$* <<EOI 2>>EOE != 0
-if
-  cmd : foo
-end
-EOI
-testscript:2:3: error: description inside 'if'
-EOE
-
-: eos-inside
-:
-$* <<EOI 2>>EOE != 0
-if
-EOI
-testscript:2:1: error: expected closing 'end'
-EOE
-
-: scope-inside
-:
-$* <<EOI 2>>EOE != 0
-if
-  cmd
-  {
-  }
-end
-EOI
-testscript:3:3: error: expected closing 'end'
-EOE
-
-: setup-inside
-:
-$* <<EOI 2>>EOE != 0
-if
-  +cmd
-end
-EOI
-testscript:2:3: error: setup command inside 'if'
-EOE
-
-: tdown-inside
-:
-$* <<EOI 2>>EOE != 0
-if
-  -cmd
-end
-EOI
-testscript:2:3: error: teardown command inside 'if'
-EOE
-
-: if-without-command
-:
-$* <<EOI 2>>EOE != 0
-if
-  cmd
-end
-EOI
-testscript:1:3: error: missing program
-EOE
-
-: command-after-else
-:
-$* <<EOI 2>>EOE != 0
-if true
-  cmd
-else cmd
-  cmd
-end
-EOI
-testscript:3:6: error: expected newline instead of 'cmd'
-EOE
-
-: command-after-end
-:
-$* <<EOI 2>>EOE != 0
-if true
-  cmd
-end cmd
-EOI
-testscript:3:5: error: expected newline instead of 'cmd'
-EOE
-
-: elif-without-if
-:
-$* <<EOI 2>>EOE != 0
-cmd
-elif true
-  cmd
-end
-EOI
-testscript:2:1: error: 'elif' without preceding 'if'
-EOE
-
-: elifn-without-if
-:
-$* <<EOI 2>>EOE != 0
-cmd
-elif! true
-  cmd
-end
-EOI
-testscript:2:1: error: 'elif!' without preceding 'if'
-EOE
-
-: else-without-if
-:
-$* <<EOI 2>>EOE != 0
-cmd
-else
-  cmd
-end
-EOI
-testscript:2:1: error: 'else' without preceding 'if'
-EOE
-
-: end-without-if
-:
-$* <<EOI 2>>EOE != 0
-cmd
-end
-EOI
-testscript:2:1: error: 'end' without preceding 'if'
-EOE
-
-: else-after-else
-:
-$* <<EOI 2>>EOE != 0
-if false
-  cmd
-else
-  cmd
-else
-  cmd
-end
-EOI
-testscript:5:1: error: 'else' after 'else'
-EOE
-
-: elif-after-else
-:
-$* <<EOI 2>>EOE != 0
-if false
-  cmd
-else
-  cmd
-elif true
-  cmd
-end
-EOI
-testscript:5:1: error: 'elif' after 'else'
-EOE
-
-: if-after-semi
-:
-$* -s <<EOI >>EOO
-cmd1;
-if true
-  cmd2
-end
-EOI
-{
-  {
-    cmd1
-    ? true
-    cmd2
-  }
-}
-EOO
-
-: setup-if
-:
-$* -s <<EOI >>EOO
-+if true
-  cmd
-end
-EOI
-{
-  ? true
-  cmd
-}
-EOO
-
-: tdown-if
-:
-$* -s <<EOI >>EOO
--if true
-  cmd
-end
-EOI
-{
-  ? true
-  cmd
-}
-EOO
-
-: semi-after-end
-:
-$* -s <<EOI >>EOO
-if true
-  cmd1
-end;
-cmd2
-EOI
-{
-  {
-    ? true
-    cmd1
-    cmd2
-  }
-}
-EOO
-
-: colon-after-end
-:
-$* -s <<EOI >>EOO
-if true
-  cmd1
-  cmd2
-end : test
-EOI
-{
-  : id:test
-  {
-    ? true
-    cmd1
-    cmd2
-  }
-}
-EOO
-
 : leading-and-trailing-description
 :
 $* <<EOI 2>>EOE != 0
diff --git a/unit-tests/test/script/parser/command-re-parse.test b/unit-tests/test/script/parser/command-re-parse.test
index 335ff69..657bf88 100644
--- a/unit-tests/test/script/parser/command-re-parse.test
+++ b/unit-tests/test/script/parser/command-re-parse.test
@@ -1,6 +1,9 @@
+# file      : unit-tests/test/script/parser/command-re-parse.test
+# copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
 
-# double-quote
-#
+: double-quote
+:
 $* <<EOI >>EOO
 x = cmd \">-\" "'<-'"
 $x
diff --git a/unit-tests/test/script/parser/description.test b/unit-tests/test/script/parser/description.test
index 16ba287..3e2bb7f 100644
--- a/unit-tests/test/script/parser/description.test
+++ b/unit-tests/test/script/parser/description.test
@@ -1,114 +1,414 @@
-$* <<EOI >>EOO                                         # id
-: foo
-cmd
-EOI
-: id:foo
-cmd
-EOO
+# file      : unit-tests/test/script/parser/description.test
+# copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
 
-$* <<EOI >>EOO                                         # trail-id
-cmd : foo
-EOI
-: id:foo
-cmd
-EOO
+: id
+:
+{
+  : lead
+  :
+  $* <<EOI >>EOO
+  : foo
+  cmd
+  EOI
+  : id:foo
+  cmd
+  EOO
 
-$* <<EOI >>EOO                                         # summary
-: foo bar
-cmd
-EOI
-: sm:foo bar
-cmd
-EOO
+  : trail
+  :
+  $* <<EOI >>EOO
+  cmd : foo
+  EOI
+  : id:foo
+  cmd
+  EOO
+
+  : dup
+  : Id uniqueness
+  :
+  {
+    : test
+    :
+    {
+      : test
+      :
+      $* <<EOI 2>>EOE != 0
+      : foo
+      cmd
+      : foo
+      cmd
+      EOI
+      testscript:3:1: error: duplicate id foo
+        testscript:1:1: info: previously used here
+      EOE
+
+      : group
+      :
+      $* <<EOI 2>>EOE != 0
+      : foo
+      cmd
+      : foo
+      {
+        cmd
+        cmd
+      }
+      EOI
+      testscript:3:1: error: duplicate id foo
+        testscript:1:1: info: previously used here
+      EOE
+
+      : derived
+      :
+      $* <<EOI 2>>EOE != 0
+      : 3
+      cmd
+      cmd
+      EOI
+      testscript:3:1: error: duplicate id 3
+        testscript:1:1: info: previously used here
+      EOE
+    }
 
-$* <<EOI >>EOO                                         # trail-summary
-cmd: foo bar
-EOI
-: sm:foo bar
-cmd
-EOO
+    : group
+    :
+    {
+      : test
+      :
+      $* <<EOI 2>>EOE != 0
+      : foo
+      {
+        cmd
+        cmd
+      }
+      : foo
+      cmd
+      EOI
+      testscript:6:1: error: duplicate id foo
+        testscript:1:1: info: previously used here
+      EOE
+
+      : group
+      :
+      $* <<EOI 2>>EOE != 0
+      : foo
+      {
+        cmd
+        cmd
+      }
+      : foo
+      {
+        cmd
+        cmd
+      }
+      EOI
+      testscript:6:1: error: duplicate id foo
+        testscript:1:1: info: previously used here
+      EOE
+
+      : derived
+      :
+      $* <<EOI 2>>EOE != 0
+      : 3
+      cmd
+      {
+        cmd
+        cmd
+      }
+      EOI
+      testscript:3:1: error: duplicate id 3
+        testscript:1:1: info: previously used here
+      EOE
+    }
+  }
+}
 
-$* <<EOI >>EOO                                         # id-summary
-: foo-bar
-: foo bar
-cmd
-EOI
-: id:foo-bar
-: sm:foo bar
-cmd
-EOO
+: summary
+{
+  : lead
+  :
+  $* <<EOI >>EOO
+  : foo bar
+  cmd
+  EOI
+  : sm:foo bar
+  cmd
+  EOO
 
-# Initially assumed summary.
-#
-$* <<EOI >>EOO                                         # details-summary
-: foo bar
-: bar baz
-cmd
-EOI
-: foo bar
-: bar baz
-cmd
-EOO
+  : trail
+  :
+  $* <<EOI >>EOO
+  cmd: foo bar
+  EOI
+  : sm:foo bar
+  cmd
+  EOO
 
-# Initially assumed id and summary.
-#
-$* <<EOI >>EOO                                         # details-id-summary
-: foo-bar
-: bar baz
-: baz fox
-cmd
-EOI
-: foo-bar
-: bar baz
-: baz fox
-cmd
-EOO
+  : id
+  :
+  $* <<EOI >>EOO
+  : foo-bar
+  : foo bar
+  cmd
+  EOI
+  : id:foo-bar
+  : sm:foo bar
+  cmd
+  EOO
+}
 
-$* <<EOI >>EOO                                         # id-details
-: foo-bar
+: details
+{
+  : id
+  :
+  $* <<EOI >>EOO
+  : foo-bar
+  :
+  : foo bar
+  : bar baz
+  cmd
+  EOI
+  : id:foo-bar
+  :
+  : foo bar
+  : bar baz
+  cmd
+  EOO
+
+  : summary
+  :
+  {
+    : only
+    :
+    $* <<EOI >>EOO
+    : foo bar
+    :
+    : foo bar
+    : bar baz
+    cmd
+    EOI
+    : sm:foo bar
+    :
+    : foo bar
+    : bar baz
+    cmd
+    EOO
+
+    : assumed
+    :
+    $* <<EOI >>EOO
+    : foo bar
+    : bar baz
+    cmd
+    EOI
+    : foo bar
+    : bar baz
+    cmd
+    EOO
+
+    : id
+    :
+    $* <<EOI >>EOO
+    : foo-bar
+    : foo bar
+    :
+    : foo bar
+    : bar baz
+    cmd
+    EOI
+    : id:foo-bar
+    : sm:foo bar
+    :
+    : foo bar
+    : bar baz
+    cmd
+    EOO
+
+    : id-assumed
+    :
+    $* <<EOI >>EOO
+    : foo-bar
+    : bar baz
+    : baz fox
+    cmd
+    EOI
+    : foo-bar
+    : bar baz
+    : baz fox
+    cmd
+    EOO
+  }
+}
+
+: legal
 :
-: foo bar
-: bar baz
-cmd
-EOI
-: id:foo-bar
+: Legal places for description.
 :
-: foo bar
-: bar baz
-cmd
-EOO
+{
+  : var
+  :
+  $* <<EOI >>EOO
+  : foo bar
+  x = y;
+  cmd $x
+  EOI
+  : sm:foo bar
+  cmd y
+  EOO
+}
 
-$* <<EOI >>EOO                                         # summary-details
-: foo bar
+: illegal
 :
-: foo bar
-: bar baz
-cmd
-EOI
-: sm:foo bar
+: Illegal places for description.
 :
-: foo bar
-: bar baz
-cmd
-EOO
+{
+  : eof
+  :
+  $* <": foo" 2>>EOE != 0
+  testscript:2:1: error: description before <end of file>
+  EOE
+
+  : rcbrace
+  :
+  $* <<EOI 2>>EOE != 0
+  {
+    cmd
+    : foo
+  }
+  EOI
+  testscript:4:1: error: description before '}'
+  EOE
 
-$* <<EOI >>EOO                                         # id-summary-details
-: foo-bar
-: foo bar
+  : setup
+  :
+  $* <<EOI 2>>EOE != 0
+  : foo
+  +cmd
+  EOI
+  testscript:2:1: error: description before setup command
+  EOE
+
+  : tdown
+  :
+  $* <<EOI 2>>EOE != 0
+  : foo
+  -cmd
+  EOI
+  testscript:2:1: error: description before teardown command
+  EOE
+
+  : var
+  :
+  $* <<EOI 2>>EOE != 0
+  : foo
+  x = y
+  EOI
+  testscript:2:1: error: description before setup/teardown variable
+  EOE
+
+  : var-if
+  :
+  $* <<EOI 2>>EOE != 0
+  : foo
+  if true
+    x = y
+  end
+  EOI
+  testscript:2:1: error: description before/after setup/teardown variable-if
+  EOE
+
+  : var-if-after
+  :
+  $* <<EOI 2>>EOE != 0
+  if true
+    x = y
+  end : foo
+  EOI
+  testscript:1:1: error: description before/after setup/teardown variable-if
+  EOE
+
+  : test
+  :
+  $* <<EOI 2>>EOE != 0
+  cmd1;
+  : foo
+  cmd2
+  EOI
+  testscript:2:1: error: description inside test
+  EOE
+}
+
+: test-scope
 :
-: foo bar
-: bar baz
-cmd
-EOI
-: id:foo-bar
-: sm:foo bar
+: Interaction with test scope merging.
 :
-: foo bar
-: bar baz
-cmd
-EOO
+{
+  : both
+  :
+  : No merge since both have description.
+  :
+  $* -s -i <<EOI >>EOO
+  : foo
+  {
+    : bar
+    cmd
+  }
+  EOI
+  {
+    : id:foo
+    { # foo
+      : id:bar
+      { # foo/bar
+        cmd
+      }
+    }
+  }
+  EOO
+
+  : test
+  :
+  : No merge since test has description.
+  :
+  $* -s -i <<EOI >>EOO
+  {
+    : foo-bar
+    : foo bar
+    cmd
+  }
+  EOI
+  {
+    { # 1
+      : id:foo-bar
+      : sm:foo bar
+      { # 1/foo-bar
+        cmd
+      }
+    }
+  }
+  EOO
 
-$* <<EOI >>EOO                                         # blanks
+  : group
+  :
+  $* -s -i <<EOI >>EOO
+  : foo-bar
+  : foo bar
+  {
+    cmd
+  }
+  EOI
+  {
+    : id:foo-bar
+    : sm:foo bar
+    { # foo-bar
+      cmd
+    }
+  }
+  EOO
+}
+
+: blanks
+:
+$* <<EOI >>EOO
 :
 :
 : foo bar
@@ -126,7 +426,9 @@ EOI
 cmd
 EOO
 
-$* <<EOI >>EOO                                         # strip
+: strip
+:
+$* <<EOI >>EOO
 :  	  foo-bar
 :  	  bar baz
 :
@@ -145,7 +447,9 @@ EOI
 cmd
 EOO
 
-$* <<EOI >>EOO                                         # trail-compound
+: trail-compound
+:
+$* <<EOI >>EOO
 cmd1;
 cmd2: foo
 EOI
@@ -154,7 +458,9 @@ cmd1
 cmd2
 EOO
 
-$* <<EOI 2>>EOE != 0                                    # empty
+: empty
+:
+$* <<EOI 2>>EOE != 0
 :
 :
 cmd
@@ -162,225 +468,19 @@ EOI
 testscript:1:1: error: empty description
 EOE
 
-$* <<EOI 2>>EOE != 0                                    # trail-empty
+: trail-empty
+:
+$* <<EOI 2>>EOE != 0
 cmd:
 EOI
 testscript:1:4: error: empty description
 EOE
 
-$* <<EOI 2>>EOE != 0                                    # both
+: both
+:
+$* <<EOI 2>>EOE != 0
 : foo
 cmd : bar
 EOI
 testscript:2:1: error: both leading and trailing descriptions
 EOE
-
-# Legal places for a description.
-#
-$* <<EOI >>EOO                                         # legal-var
-: foo bar
-x = y;
-cmd $x
-EOI
-: sm:foo bar
-cmd y
-EOO
-
-# Illegal places for a description.
-#
-$* <": foo" 2>>EOE != 0                                 # illegal-eof
-testscript:2:1: error: description before <end of file>
-EOE
-
-$* <<EOI 2>>EOE != 0                                    # illegal-rcbrace
-{
-  cmd
-  : foo
-}
-EOI
-testscript:4:1: error: description before '}'
-EOE
-
-$* <<EOI 2>>EOE != 0                                    # illegal-setup
-: foo
-+cmd
-EOI
-testscript:2:1: error: description before setup command
-EOE
-
-$* <<EOI 2>>EOE != 0                                    # illegal-tdown
-: foo
--cmd
-EOI
-testscript:2:1: error: description before teardown command
-EOE
-
-$* <<EOI 2>>EOE != 0                                    # illegal-var
-: foo
-x = y
-EOI
-testscript:2:1: error: description before setup/teardown variable
-EOE
-
-$* <<EOI 2>>EOE != 0                                    # illegal-var-if
-: foo
-if true
-  x = y
-end
-EOI
-testscript:2:1: error: description before/after setup/teardown variable-if
-EOE
-
-$* <<EOI 2>>EOE != 0                                    # illegal-var-if-after
-if true
-  x = y
-end : foo
-EOI
-testscript:1:1: error: description before/after setup/teardown variable-if
-EOE
-
-$* <<EOI 2>>EOE != 0                                    # illegal-test
-cmd1;
-: foo
-cmd2
-EOI
-testscript:2:1: error: description inside test
-EOE
-
-# Id uniqueness.
-#
-$* <<EOI 2>>EOE != 0                                    # id-dup-test-test
-: foo
-cmd
-: foo
-cmd
-EOI
-testscript:3:1: error: duplicate id foo
-  testscript:1:1: info: previously used here
-EOE
-
-$* <<EOI 2>>EOE != 0                                    # id-dup-test-group
-: foo
-cmd
-: foo
-{
-  cmd
-  cmd
-}
-EOI
-testscript:3:1: error: duplicate id foo
-  testscript:1:1: info: previously used here
-EOE
-
-$* <<EOI 2>>EOE != 0                                    # id-dup-group-test
-: foo
-{
-  cmd
-  cmd
-}
-: foo
-cmd
-EOI
-testscript:6:1: error: duplicate id foo
-  testscript:1:1: info: previously used here
-EOE
-
-$* <<EOI 2>>EOE != 0                                    # id-dup-group-group
-: foo
-{
-  cmd
-  cmd
-}
-: foo
-{
-  cmd
-  cmd
-}
-EOI
-testscript:6:1: error: duplicate id foo
-  testscript:1:1: info: previously used here
-EOE
-
-$* <<EOI 2>>EOE != 0                                    # id-dup-group-derived
-: 3
-cmd
-{
-  cmd
-  cmd
-}
-EOI
-testscript:3:1: error: duplicate id 3
-  testscript:1:1: info: previously used here
-EOE
-
-$* <<EOI 2>>EOE != 0                                    # id-dup-test-derived
-: 3
-cmd
-cmd
-EOI
-testscript:3:1: error: duplicate id 3
-  testscript:1:1: info: previously used here
-EOE
-
-# Interaction with test scope merging.
-#
-
-: test-scope-both
-:
-: No merge since both have description.
-:
-$* -s -i <<EOI >>EOO
-: foo
-{
-  : bar
-  cmd
-}
-EOI
-{
-  : id:foo
-  { # foo
-    : id:bar
-    { # foo/bar
-      cmd
-    }
-  }
-}
-EOO
-
-: test-scope-test
-:
-: No merge since test has description.
-:
-$* -s -i <<EOI >>EOO                    #
-{
-  : foo-bar
-  : foo bar
-  cmd
-}
-EOI
-{
-  { # 1
-    : id:foo-bar
-    : sm:foo bar
-    { # 1/foo-bar
-      cmd
-    }
-  }
-}
-EOO
-
-$* -s -i <<EOI >>EOO                    # test-scope-group
-: foo-bar
-: foo bar
-{
-  cmd
-}
-EOI
-{
-  : id:foo-bar
-  : sm:foo bar
-  { # foo-bar
-    cmd
-  }
-}
-EOO
diff --git a/unit-tests/test/script/parser/directive.test b/unit-tests/test/script/parser/directive.test
index 07cb65c..d426d9c 100644
--- a/unit-tests/test/script/parser/directive.test
+++ b/unit-tests/test/script/parser/directive.test
@@ -1,3 +1,7 @@
+# file      : unit-tests/test/script/parser/directive.test
+# copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+
 : not-directive
 :
 $* <<EOI >>EOO
diff --git a/unit-tests/test/script/parser/exit.test b/unit-tests/test/script/parser/exit.test
index 263179b..9a4f9dc 100644
--- a/unit-tests/test/script/parser/exit.test
+++ b/unit-tests/test/script/parser/exit.test
@@ -1,3 +1,7 @@
+# file      : unit-tests/test/script/parser/exit.test
+# copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+
 : eq
 :
 $* <<EOI >>EOO
diff --git a/unit-tests/test/script/parser/expansion.test b/unit-tests/test/script/parser/expansion.test
index 1d10a63..0a40827 100644
--- a/unit-tests/test/script/parser/expansion.test
+++ b/unit-tests/test/script/parser/expansion.test
@@ -1,8 +1,11 @@
-# Make sure everything expanded as strings.
-#
+# file      : unit-tests/test/script/parser/expansion.test
+# copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
 
-# quote
-#
+: quote
+:
+: Make sure everything expanded as strings.
+:
 $* <<EOI >>EOO
 x = dir/ proj% proj%name proj%proj%dir/type{name   name   {name}}
 cmd dir/ proj% proj%name proj%proj%dir/type{name   name   {name}}
diff --git a/unit-tests/test/script/parser/here-document.test b/unit-tests/test/script/parser/here-document.test
index 4afcf68..1e4f93b 100644
--- a/unit-tests/test/script/parser/here-document.test
+++ b/unit-tests/test/script/parser/here-document.test
@@ -1,3 +1,7 @@
+# file      : unit-tests/test/script/parser/here-document.test
+# copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+
 : end-marker
 :
 {
diff --git a/unit-tests/test/script/parser/here-string.test b/unit-tests/test/script/parser/here-string.test
index 9c4b68b..ab16779 100644
--- a/unit-tests/test/script/parser/here-string.test
+++ b/unit-tests/test/script/parser/here-string.test
@@ -1,10 +1,18 @@
-$* <<EOI >>EOO # empty
+# file      : unit-tests/test/script/parser/here-string.test
+# copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+
+: empty
+:
+$* <<EOI >>EOO
 cmd <""
 EOI
 cmd <''
 EOO
 
-$* <<EOI >>EOO # empty-nn
+: empty-nn
+:
+$* <<EOI >>EOO
 cmd <:""
 EOI
 cmd <:''
diff --git a/unit-tests/test/script/parser/include.test b/unit-tests/test/script/parser/include.test
index 7910919..c810036 100644
--- a/unit-tests/test/script/parser/include.test
+++ b/unit-tests/test/script/parser/include.test
@@ -1,3 +1,7 @@
+# file      : unit-tests/test/script/parser/include.test
+# copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+
 : none
 :
 $* <<EOI
@@ -7,7 +11,7 @@ EOI
 
 : empty
 :
-touch foo.test &foo.test; #@@ TMP
+touch foo.test;
 $* <<EOI
 .include foo.test
 .include --once foo.test
@@ -93,8 +97,8 @@ EOE
 
 : unable-open
 :
-: Note that the error message is platform specific.
-:
-$* <<EOI 2>- != 0
+$* <<EOI 2>>~/EOE/ != 0
 .include foo.test
 EOI
+/testscript:1:2: error: unable to read testscript foo.test: .+/
+EOE
diff --git a/unit-tests/test/script/parser/pipe-expr.test b/unit-tests/test/script/parser/pipe-expr.test
index 74077e7..cc0bd7e 100644
--- a/unit-tests/test/script/parser/pipe-expr.test
+++ b/unit-tests/test/script/parser/pipe-expr.test
@@ -1,3 +1,7 @@
+# file      : unit-tests/test/script/parser/pipe-expr.test
+# copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+
 : pipe
 :
 $* <<EOI >>EOO
diff --git a/unit-tests/test/script/parser/pre-parse.test b/unit-tests/test/script/parser/pre-parse.test
index 4057f9a..d2ae7ce 100644
--- a/unit-tests/test/script/parser/pre-parse.test
+++ b/unit-tests/test/script/parser/pre-parse.test
@@ -1,15 +1,23 @@
-# attribute-pair
-#
-$* <<EOI 2>>EOE != 0
-x = [foo=bar]
-EOI
-testscript:1:5: error: unknown value attribute foo=bar
-EOE
+# file      : unit-tests/test/script/parser/pre-parse.test
+# copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
 
-# attribute-pair-empty
-#
-$* <<EOI 2>>EOE != 0
-x = [foo=]
-EOI
-testscript:1:5: error: unknown value attribute foo
-EOE
+: attribute
+:
+{
+  : pair
+  :
+  $* <<EOI 2>>EOE != 0
+  x = [foo=bar]
+  EOI
+  testscript:1:5: error: unknown value attribute foo=bar
+  EOE
+
+  : pair-empty
+  :
+  $* <<EOI 2>>EOE != 0
+  x = [foo=]
+  EOI
+  testscript:1:5: error: unknown value attribute foo
+  EOE
+}
diff --git a/unit-tests/test/script/parser/redirect.test b/unit-tests/test/script/parser/redirect.test
index 2642834..5a91354 100644
--- a/unit-tests/test/script/parser/redirect.test
+++ b/unit-tests/test/script/parser/redirect.test
@@ -1,117 +1,185 @@
+# file      : unit-tests/test/script/parser/redirect.test
+# copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+
 # @@ Add tests for redirects other than file and merge.
 # @@ Does it make sense to split into separate files - one per redirect type?
 #
 
-$* <<EOI >>EOO          # file
-cmd 0<<<a 1>>>b 2>>>&c
-EOI
-cmd <<<a >>>b 2>>>&c
-EOO
-
-$* <<EOI >>EOO          # quote-file
-cmd 0<<<"a f" 1>>>"b f" 2>>>&"c f"
-EOI
-cmd <<<'a f' >>>'b f' 2>>>&'c f'
-EOO
-
-$* <<EOI 2>>EOE !=0     # in-file-fail1
-cmd <<<
-EOI
-testscript:1:8: error: missing stdin file
-EOE
-
-$* <<EOI 2>>EOE !=0     # in-file-fail2
-cmd <<<""
-EOI
-testscript:1:8: error: empty stdin redirect path
-EOE
-
-$* <<EOI 2>>EOE !=0     # out-file-fail1
-cmd >>>
-EOI
-testscript:1:8: error: missing stdout file
-EOE
-
-$* <<EOI 2>>EOE !=0     # out-file-fail2
-cmd >>>""
-EOI
-testscript:1:8: error: empty stdout redirect path
-EOE
-
-$* <<EOI 2>>EOE !=0     # err-file-fail1
-cmd 2>>>
-EOI
-testscript:1:9: error: missing stderr file
-EOE
-
-$* <<EOI 2>>EOE !=0     # err-file-fail2
-cmd 2>>>""
-EOI
-testscript:1:9: error: empty stderr redirect path
-EOE
-
-$* <<EOI >>EOO          # out-merge1
-cmd 1>&2
-EOI
-cmd >&2
-EOO
-
-$* <<EOI >>EOO          # out-merge2
-cmd 1>&2 2>&1 2>a
-EOI
-cmd >&2 2>a
-EOO
-
-$* <<EOI 2>>EOE != 0    # out-merge-fail1
-cmd 1>&a
-EOI
-testscript:1:8: error: stdout merge redirect file descriptor must be 2
-EOE
-
-$* <<EOI 2>>EOE != 0    # out-merge-fail2
-cmd 1>&1
-EOI
-testscript:1:8: error: stdout merge redirect file descriptor must be 2
-EOE
-
-$* <<EOI 2>>EOE != 0    # out-merge-fail3
-cmd 1>&
-EOI
-testscript:1:8: error: missing stdout file descriptor
-EOE
-
-$* <<EOI >>EOO          # err-merge1
-cmd 2>&1
-EOI
-cmd 2>&1
-EOO
-
-$* <<EOI >>EOO          # err-merge2
-cmd 1>&2 2>&1 >a
-EOI
-cmd >a 2>&1
-EOO
-
-$* <<EOI 2>>EOE != 0    # err-merge-fail1
-cmd 2>&2
-EOI
-testscript:1:8: error: stderr merge redirect file descriptor must be 1
-EOE
-
-$* <<EOI 2>>EOE != 0    # err-merge-fail2
-cmd 2>&2
-EOI
-testscript:1:8: error: stderr merge redirect file descriptor must be 1
-EOE
-
-$* <<EOI 2>>EOE != 0    # err-merge-fail3
-cmd 2>&
-EOI
-testscript:1:8: error: missing stderr file descriptor
-EOE
-
-$* <<EOI 2>>EOE != 0    # merge-fail1
-cmd 1>&2 2>&1
-EOI
-testscript:1:14: error: stdout and stderr redirected to each other
-EOE
+: file
+:
+{
+  : not-quote
+  :
+  $* <<EOI >>EOO
+  cmd 0<<<a 1>>>b 2>>>&c
+  EOI
+  cmd <<<a >>>b 2>>>&c
+  EOO
+
+  : quote
+  :
+  $* <<EOI >>EOO
+  cmd 0<<<"a f" 1>>>"b f" 2>>>&"c f"
+  EOI
+  cmd <<<'a f' >>>'b f' 2>>>&'c f'
+  EOO
+
+  : in
+  :
+  {
+    : missed
+    :
+    $* <<EOI 2>>EOE !=0
+    cmd <<<
+    EOI
+    testscript:1:8: error: missing stdin file
+    EOE
+
+    : empty
+    :
+    $* <<EOI 2>>EOE !=0
+    cmd <<<""
+    EOI
+    testscript:1:8: error: empty stdin redirect path
+    EOE
+  }
+
+  : out
+  :
+  {
+    : missed
+    :
+    $* <<EOI 2>>EOE !=0
+    cmd >>>
+    EOI
+    testscript:1:8: error: missing stdout file
+    EOE
+
+    : empty
+    :
+    $* <<EOI 2>>EOE !=0
+    cmd >>>""
+    EOI
+    testscript:1:8: error: empty stdout redirect path
+    EOE
+  }
+
+  : err
+  :
+  {
+    : missed
+    :
+    $* <<EOI 2>>EOE !=0
+    cmd 2>>>
+    EOI
+    testscript:1:9: error: missing stderr file
+    EOE
+
+    : empty
+    :
+    $* <<EOI 2>>EOE !=0
+    cmd 2>>>""
+    EOI
+    testscript:1:9: error: empty stderr redirect path
+    EOE
+  }
+}
+
+: merge
+{
+  : out
+  :
+  {
+    : err
+    :
+    $* <<EOI >>EOO
+    cmd 1>&2
+    EOI
+    cmd >&2
+    EOO
+
+    : no-mutual
+    :
+    $* <<EOI >>EOO
+    cmd 1>&2 2>&1 2>a
+    EOI
+    cmd >&2 2>a
+    EOO
+
+    : not-descriptor
+    :
+    $* <<EOI 2>>EOE != 0
+    cmd 1>&a
+    EOI
+    testscript:1:8: error: stdout merge redirect file descriptor must be 2
+    EOE
+
+    : self
+    :
+    $* <<EOI 2>>EOE != 0
+    cmd 1>&1
+    EOI
+    testscript:1:8: error: stdout merge redirect file descriptor must be 2
+    EOE
+
+    : missed
+    :
+    $* <<EOI 2>>EOE != 0
+    cmd 1>&
+    EOI
+    testscript:1:8: error: missing stdout file descriptor
+    EOE
+  }
+
+  : err
+  {
+    : out
+    :
+    $* <<EOI >>EOO
+    cmd 2>&1
+    EOI
+    cmd 2>&1
+    EOO
+
+    : no-mutual
+    :
+    $* <<EOI >>EOO
+    cmd 1>&2 2>&1 >a
+    EOI
+    cmd >a 2>&1
+    EOO
+
+    : not-descriptor
+    :
+    $* <<EOI 2>>EOE != 0
+    cmd 2>&a
+    EOI
+    testscript:1:8: error: stderr merge redirect file descriptor must be 1
+    EOE
+
+    : self
+    :
+    $* <<EOI 2>>EOE != 0
+    cmd 2>&2
+    EOI
+    testscript:1:8: error: stderr merge redirect file descriptor must be 1
+    EOE
+
+    : missed
+    :
+    $* <<EOI 2>>EOE != 0
+    cmd 2>&
+    EOI
+    testscript:1:8: error: missing stderr file descriptor
+    EOE
+  }
+
+  : mutual
+  :
+  $* <<EOI 2>>EOE != 0
+  cmd 1>&2 2>&1
+  EOI
+  testscript:1:14: error: stdout and stderr redirected to each other
+  EOE
+}
diff --git a/unit-tests/test/script/parser/regex.test b/unit-tests/test/script/parser/regex.test
index 9f2e737..f3fda75 100644
--- a/unit-tests/test/script/parser/regex.test
+++ b/unit-tests/test/script/parser/regex.test
@@ -8,7 +8,7 @@
   : stdout
   :
   {
-    : missing
+    : missed
     :
     $* <'cmd >~' 2>>EOE != 0
     testscript:1:7: error: missing stdout here-string regex
@@ -67,7 +67,7 @@
   : stderr
   :
   {
-    : missing
+    : missed
     :
     $* <'cmd 2>~' 2>>EOE != 0
     testscript:1:8: error: missing stderr here-string regex
@@ -97,7 +97,7 @@
   : stdout
   :
   {
-    : missing
+    : missed
     :
     $* <'cmd >>~' 2>>EOE != 0
     testscript:1:8: error: expected here-document regex end marker
@@ -185,7 +185,7 @@
   : stderr
   :
   {
-    : missing
+    : missed
     :
     $* <'cmd 2>>~' 2>>EOE != 0
     testscript:1:9: error: expected here-document regex end marker
diff --git a/unit-tests/test/script/parser/scope-if.test b/unit-tests/test/script/parser/scope-if.test
index e04c47e..4f524cf 100644
--- a/unit-tests/test/script/parser/scope-if.test
+++ b/unit-tests/test/script/parser/scope-if.test
@@ -1,365 +1,450 @@
-: if-true
+# file      : unit-tests/test/script/parser/scope-if.test
+# copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+
+: if
 :
-$* -s <<EOI >>EOO
-if true foo
-{
-  cmd
-}
-EOI
 {
-  ? true foo
+  : true
+  :
+  $* -s <<EOI >>EOO
+  if true foo
   {
     cmd
   }
-}
-EOO
+  EOI
+  {
+    ? true foo
+    {
+      cmd
+    }
+  }
+  EOO
 
-: if-false
-:
-$* -s <<EOI >>EOO
-if false foo
-{
-  cmd
-}
-EOI
-{
-  ? false foo
-}
-EOO
+  : false
+  :
+  $* -s <<EOI >>EOO
+  if false foo
+  {
+    cmd
+  }
+  EOI
+  {
+    ? false foo
+  }
+  EOO
 
-: ifn-true
-:
-$* -s <<EOI >>EOO
-if! true
-{
-  cmd
-}
-EOI
-{
-  ? true
-}
-EOO
+  : not-true
+  :
+  $* -s <<EOI >>EOO
+  if! true
+  {
+    cmd
+  }
+  EOI
+  {
+    ? true
+  }
+  EOO
 
-: ifn-false
-:
-$* -s <<EOI >>EOO
-if! false
-{
-  cmd
-}
-EOI
-{
-  ? false
+  : not-false
+  :
+  $* -s <<EOI >>EOO
+  if! false
   {
     cmd
   }
+  EOI
+  {
+    ? false
+    {
+      cmd
+    }
+  }
+  EOO
+
+  : eos-inside
+  :
+  $* <<EOI 2>>EOE != 0
+  if
+  {
+  EOI
+  testscript:3:1: error: expected '}' at the end of the scope
+  EOE
+
 }
-EOO
 
-: elif-true
+: elif
 :
-$* -s <<EOI >>EOO
-if false
-{
-  cmd
-}
-elif true
 {
-  cmd1
-}
-EOI
-{
-  ? false
-  ? true
+  : true
+  :
+  $* -s <<EOI >>EOO
+  if false
+  {
+    cmd
+  }
+  elif true
   {
     cmd1
   }
-}
-EOO
+  EOI
+  {
+    ? false
+    ? true
+    {
+      cmd1
+    }
+  }
+  EOO
 
-: elif-false
-:
-$* -s <<EOI >>EOO
-if false
-{
-  cmd
-}
-elif false
-{
-  cmd
-}
-EOI
-{
-  ? false
-  ? false
-}
-EOO
+  : false
+  :
+  $* -s <<EOI >>EOO
+  if false
+  {
+    cmd
+  }
+  elif false
+  {
+    cmd
+  }
+  EOI
+  {
+    ? false
+    ? false
+  }
+  EOO
 
-: elifn-false
-:
-$* -s <<EOI >>EOO
-if false
-{
-  cmd
-}
-elif! false
-{
-  cmd1
-}
-EOI
-{
-  ? false
-  ? false
+  : not-false
+  :
+  $* -s <<EOI >>EOO
+  if false
+  {
+    cmd
+  }
+  elif! false
   {
     cmd1
   }
-}
-EOO
+  EOI
+  {
+    ? false
+    ? false
+    {
+      cmd1
+    }
+  }
+  EOO
 
-: elifn-true
-:
-$* -s <<EOI >>EOO
-if false
-{
-  cmd
-}
-elif! true
-{
-  cmd
-}
-EOI
-{
-  ? false
-  ? true
-}
-EOO
+  : not-true
+  :
+  $* -s <<EOI >>EOO
+  if false
+  {
+    cmd
+  }
+  elif! true
+  {
+    cmd
+  }
+  EOI
+  {
+    ? false
+    ? true
+  }
+  EOO
 
-: else-true
-:
-$* -s <<EOI >>EOO
-if false
-{
-  cmd
-}
-else
-{
-  cmd1
-}
-EOI
-{
-  ? false
+  : after-else
+  :
+  $* <<EOI 2>>EOE != 0
+  if false
   {
-    cmd1
+    cmd
+  }
+  else
+  {
+    cmd
+  }
+  elif true
+  {
+    cmd
   }
+  EOI
+  testscript:9:1: error: 'elif' after 'else'
+  EOE
 }
-EOO
 
-: else-false
+: else
 :
-$* -s <<EOI >>EOO
-if true
-{
-  cmd1
-}
-else
 {
-  cmd
-}
-EOI
-{
-  ? true
+  : true
+  :
+  $* -s <<EOI >>EOO
+  if false
+  {
+    cmd
+  }
+  else
   {
     cmd1
   }
-}
-EOO
-
-: if-chain
-:
-$* -s <<EOI >>EOO
-if false
-{
-  cmd
-}
-elif false
-{
-  cmd
-  cmd
-}
-elif false
-{
-  cmd
-}
-elif true
-{
-  cmd1
-  cmd2
-}
-elif false
-{
-  cmd
-}
-else
-{
-  cmd
-  cmd
-}
-EOI
-{
-  ? false
-  ? false
-  ? false
-  ? true
+  EOI
   {
+    ? false
     {
       cmd1
     }
+  }
+  EOO
+
+  : false
+  :
+  $* -s <<EOI >>EOO
+  if true
+  {
+    cmd1
+  }
+  else
+  {
+    cmd
+  }
+  EOI
+  {
+    ? true
     {
-      cmd2
+      cmd1
     }
   }
-}
-EOO
+  EOO
 
-: nested-take
-:
-$* -s <<EOI >>EOO
-if true
-{
-  cmd1
+  : chain
+  :
+  $* -s <<EOI >>EOO
   if false
   {
     cmd
   }
   elif false
   {
-    if true
-    {
-      cmd
-    }
+    cmd
+    cmd
   }
-  else
+  elif false
+  {
+    cmd
+  }
+  elif true
   {
+    cmd1
     cmd2
   }
-  cmd3
-}
-EOI
-{
-  ? true
+  elif false
   {
-    {
-      cmd1
-    }
+    cmd
+  }
+  else
+  {
+    cmd
+    cmd
+  }
+  EOI
+  {
+    ? false
     ? false
     ? false
+    ? true
     {
       {
+        cmd1
+      }
+      {
         cmd2
       }
     }
-    {
-      cmd3
-    }
   }
-}
-EOO
+  EOO
 
-: nested-skip
-:
-$* -s <<EOI >>EOO
-if false
-{
-  cmd1
+  : scope-expected
+  :
+  $* <<EOI 2>>EOE != 0
+  if
+  {
+    cmd
+  }
+  else
+  cmd
+  EOI
+  testscript:5:1: error: expected scope after 'else'
+  EOE
+
+  : after-else
+  :
+  $* <<EOI 2>>EOE != 0
   if false
   {
     cmd
   }
-  elif false
+  else
   {
-    if true
-    {
-      cmd
-    }
+    cmd
   }
   else
   {
-    cmd2
+    cmd
   }
-  cmd3
+  EOI
+  testscript:9:1: error: 'else' after 'else'
+  EOE
 }
-else
-{
-  cmd
-}
-EOI
+
+: nested
+:
 {
-  ? false
+  : take
+  :
+  $* -s <<EOI >>EOO
+  if true
   {
+    cmd1
+    if false
     {
       cmd
     }
+    elif false
+    {
+      if true
+      {
+        cmd
+      }
+    }
+    else
+    {
+      cmd2
+    }
+    cmd3
   }
-}
-EOO
+  EOI
+  {
+    ? true
+    {
+      {
+        cmd1
+      }
+      ? false
+      ? false
+      {
+        {
+          cmd2
+        }
+      }
+      {
+        cmd3
+      }
+    }
+  }
+  EOO
 
-: demote-group
-: Chain remains a group
-:
-$* -s <<EOI >>EOO
-if false
-{
-  cmd
-}
-elif true
-{
-  cmd1
-  cmd2
-}
-else
-{
-  cmd
-}
-EOI
-{
-  ? false
-  ? true
+  : skip
+  :
+  $* -s <<EOI >>EOO
+  if false
   {
+    cmd1
+    if false
     {
-      cmd1
+      cmd
     }
+    elif false
+    {
+      if true
+      {
+        cmd
+      }
+    }
+    else
     {
       cmd2
     }
+    cmd3
+  }
+  else
+  {
+    cmd
+  }
+  EOI
+  {
+    ? false
+    {
+      {
+        cmd
+      }
+    }
   }
+  EOO
 }
-EOO
 
-: demote-test
-: Chain demoted to test
+: demote
 :
-$* -s <<EOI >>EOO
-if false
 {
-  cmd
-}
-elif true
-{
-  cmd1
-}
-else
-{
-  cmd
-}
-EOI
-{
-  ? false
-  ? true
+  : group
+  : Chain remains a group
+  :
+  $* -s <<EOI >>EOO
+  if false
+  {
+    cmd
+  }
+  elif true
+  {
+    cmd1
+    cmd2
+  }
+  else
+  {
+    cmd
+  }
+  EOI
+  {
+    ? false
+    ? true
+    {
+      {
+        cmd1
+      }
+      {
+        cmd2
+      }
+    }
+  }
+  EOO
+
+  : test
+  : Chain demoted to test
+  :
+  $* -s <<EOI >>EOO
+  if false
+  {
+    cmd
+  }
+  elif true
   {
     cmd1
   }
+  else
+  {
+    cmd
+  }
+  EOI
+  {
+    ? false
+    ? true
+    {
+      cmd1
+    }
+  }
+  EOO
 }
-EOO
 
 : line-index
 : Make sure command line index spans setup/if/teardown
@@ -467,63 +552,3 @@ EOI
   }
 }
 EOO
-
-: eos-inside
-:
-$* <<EOI 2>>EOE != 0
-if
-{
-EOI
-testscript:3:1: error: expected '}' at the end of the scope
-EOE
-
-: scope-expected
-:
-$* <<EOI 2>>EOE != 0
-if
-{
-  cmd
-}
-else
-cmd
-EOI
-testscript:5:1: error: expected scope after 'else'
-EOE
-
-: else-after-else
-:
-$* <<EOI 2>>EOE != 0
-if false
-{
-  cmd
-}
-else
-{
-  cmd
-}
-else
-{
-  cmd
-}
-EOI
-testscript:9:1: error: 'else' after 'else'
-EOE
-
-: elif-after-else
-:
-$* <<EOI 2>>EOE != 0
-if false
-{
-  cmd
-}
-else
-{
-  cmd
-}
-elif true
-{
-  cmd
-}
-EOI
-testscript:9:1: error: 'elif' after 'else'
-EOE
diff --git a/unit-tests/test/script/parser/scope.test b/unit-tests/test/script/parser/scope.test
index 7d78aca..144dc54 100644
--- a/unit-tests/test/script/parser/scope.test
+++ b/unit-tests/test/script/parser/scope.test
@@ -1,5 +1,9 @@
-$* testscript <'cmd $@' >"cmd 1"     # id-testscript
-$* foo.test   <'cmd $@' >"cmd foo/1" # id
+# file      : unit-tests/test/script/parser/scope.test
+# copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+
+$* testscript <'cmd $@' >"cmd 1"     : id-testscript
+$* foo.test   <'cmd $@' >"cmd foo/1" : id
 
 : wd-testscript
 :
@@ -9,214 +13,268 @@ $* testscript <'cmd "$~"' >~"%cmd '?.+[/\\\\]test-driver[/\\\\]1'?%"
 :
 $* foo.test <'cmd "$~"' >~"%cmd '?.+[/\\\\]test-driver[/\\\\]foo[/\\\\]1'?%"
 
-$* -s <<EOI                          # group-empty
-{
-}
-EOI
-
-$* -s <<EOI                          # group-empty-empty
+: group
+:
 {
- {
- }
-}
-EOI
+  : empty
+  :
+  $* -s <<EOI
+  {
+  }
+  EOI
 
-$* -s <<EOI >>EOO                    # group
-{
-  cmd1
-  cmd2
-}
-EOI
-{
+  : empty-empty
+  :
+  $* -s <<EOI
   {
     {
-      cmd1
-    }
-    {
-      cmd2
     }
   }
-}
-EOO
-
-# Test scope.
-#
+  EOI
 
-$* -s -i <<EOI >>EOO                 # test-scope
-{
-  cmd
-}
-EOI
-{
-  { # 1
-    cmd
-  }
-}
-EOO
-
-$* -s -i <<EOI >>EOO                    # test-scope-nested
-{
+  : non-empty
+  :
+  $* -s <<EOI >>EOO
   {
-    cmd
+    cmd1
+    cmd2
   }
-}
-EOI
-{
-  { # 1
-    cmd
+  EOI
+  {
+    {
+      {
+        cmd1
+      }
+      {
+        cmd2
+      }
+    }
   }
+  EOO
 }
-EOO
 
-$* -s -i <<EOI >>EOO                    # test-scope-var
-{
-  x = abc
-  cmd $x
-}
-EOI
+: test
+:
 {
-  { # 1
-    cmd abc
-  }
-}
-EOO
+  : explicit
+  :
+  {
+    : one-level
+    :
+    $* -s -i <<EOI >>EOO
+    {
+      cmd
+    }
+    EOI
+    {
+      { # 1
+        cmd
+      }
+    }
+    EOO
 
-$* -s -i <<EOI >>EOO                    # test-scope-setup
-{
-  x = abc
-  +setup
-  cmd $x
-}
-EOI
-{
-  { # 1
-    setup
-    { # 1/4
-      cmd abc
+    : nested
+    :
+    $* -s -i <<EOI >>EOO
+    {
+      {
+        cmd
+      }
     }
+    EOI
+    {
+      { # 1
+        cmd
+      }
+    }
+    EOO
+
+    : var
+    :
+    $* -s -i <<EOI >>EOO
+    {
+      x = abc
+      cmd $x
+    }
+    EOI
+    {
+      { # 1
+        cmd abc
+      }
+    }
+    EOO
+
+    : setup
+    :
+    $* -s -i <<EOI >>EOO
+    {
+      x = abc
+      +setup
+      cmd $x
+    }
+    EOI
+    {
+      { # 1
+        setup
+        { # 1/4
+          cmd abc
+        }
+      }
+    }
+    EOO
   }
-}
-EOO
 
+  : implicit
+  {
+    : one-cmd
+    :
+    $* -s <<EOI >>EOO
+    cmd1
+    EOI
+    {
+      {
+        cmd1
+      }
+    }
+    EOO
 
-#
-#
-$* <:"{x" 2>>EOE != 0                # expected-newline-lcbrace
-testscript:1:2: error: expected newline after '{'
-EOE
+    : two-cmd
+    :
+    $* -s <<EOI >>EOO
+    cmd1;
+    cmd2
+    EOI
+    {
+      {
+        cmd1
+        cmd2
+      }
+    }
+    EOO
 
-$* <"{" 2>>EOE != 0                  # expected-rcbrace
-testscript:2:1: error: expected '}' at the end of the scope
-EOE
+    : three-cmd
+    :
+    $* -s <<EOI >>EOO
+    cmd1;
+    cmd2;
+    cmd3
+    EOI
+    {
+      {
+        cmd1
+        cmd2
+        cmd3
+      }
+    }
+    EOO
 
-$* <<EOI 2>>EOE != 0                 # expected-line-rcbrace
-{
-  cmd;
-}
-EOI
-testscript:3:1: error: expected another line after ';'
-EOE
+    : var
+    :
+    $* -s <<EOI >>EOO
+    cmd1;
+    x = abc;
+    cmd2 $x
+    EOI
+    {
+      {
+        cmd1
+        cmd2 abc
+      }
+    }
+    EOO
 
-$* <<:EOI 2>>EOE != 0                 # expected-newline-rcbrace
-{
-}
-EOI
-testscript:2:2: error: expected newline after '}'
-EOE
+    : var-first
+    :
+    $* -s <<EOI >>EOO
+    x = abc;
+    cmd $x
+    EOI
+    {
+      {
+        cmd abc
+      }
+    }
+    EOO
 
-$* -s <<EOI >>EOO                    # test-1
-cmd1
-EOI
-{
-  {
-    cmd1
-  }
-}
-EOO
+    : var-setup-tdown
+    :
+    $* -s <<EOI >>EOO
+    x = abc
+    cmd $x
+    y = 123
+    EOI
+    {
+      {
+        cmd abc
+      }
+    }
+    EOO
 
-$* -s <<EOI >>EOO                    # test-2
-cmd1;
-cmd2
-EOI
-{
-  {
+    : after-tdown
+    :
+    $* <<EOI 2>>EOE != 0
     cmd1
+    x = abc
     cmd2
+    EOI
+    testscript:3:1: error: test after teardown
+      testscript:2:1: info: last teardown line appears here
+    EOE
   }
 }
-EOO
 
-$* -s <<EOI >>EOO                    # test-3
-cmd1;
-cmd2;
-cmd3
-EOI
+: expected
 {
-  {
-    cmd1
-    cmd2
-    cmd3
-  }
-}
-EOO
+  : newline-lcbrace
+  :
+  $* <:"{x" 2>>EOE != 0
+  testscript:1:2: error: expected newline after '{'
+  EOE
 
-$* -s <<EOI >>EOO                    # test-var
-cmd1;
-x = abc;
-cmd2 $x
-EOI
-{
-  {
-    cmd1
-    cmd2 abc
-  }
-}
-EOO
+  : rcbrace
+  :
+  $* <"{" 2>>EOE != 0
+  testscript:2:1: error: expected '}' at the end of the scope
+  EOE
 
-$* -s <<EOI >>EOO                    # test-var-first
-x = abc;
-cmd $x
-EOI
-{
+  : line-rcbrace
+  :
+  $* <<EOI 2>>EOE != 0
   {
-    cmd abc
+    cmd;
   }
-}
-EOO
+  EOI
+  testscript:3:1: error: expected another line after ';'
+  EOE
 
-$* -s <<EOI >>EOO                    # var-setup-tdown
-x = abc
-cmd $x
-y = 123
-EOI
-{
+  : newline-rcbrace
+  :
+  $* <<:EOI 2>>EOE != 0
   {
-    cmd abc
   }
+  EOI
+  testscript:2:2: error: expected newline after '}'
+  EOE
+
+  : line-eof
+  :
+  $* <<EOI 2>>EOE != 0
+  cmd;
+  EOI
+  testscript:2:1: error: expected another line after ';'
+  EOE
+
+  : newline-cmd
+  :
+  $* <<:EOI 2>>EOE != 0
+  cmd;
+  EOI
+  testscript:1:5: error: expected newline instead of <end of file>
+  EOE
+
+  : newline-var
+  :
+  $* <:"x = abc;" 2>>EOE != 0
+  testscript:1:9: error: expected newline instead of <end of file>
+  EOE
 }
-EOO
-
-$* <<EOI 2>>EOE != 0                 # test-after-tdown
-cmd1
-x = abc
-cmd2
-EOI
-testscript:3:1: error: test after teardown
-  testscript:2:1: info: last teardown line appears here
-EOE
-
-$* <<EOI 2>>EOE != 0                 # expected-line-eof
-cmd;
-EOI
-testscript:2:1: error: expected another line after ';'
-EOE
-
-$* <<:EOI 2>>EOE != 0                # expected-newline-cmd
-cmd;
-EOI
-testscript:1:5: error: expected newline instead of <end of file>
-EOE
-
-$* <:"x = abc;" 2>>EOE != 0          # expected-newline-var
-testscript:1:9: error: expected newline instead of <end of file>
-EOE
diff --git a/unit-tests/test/script/parser/setup-teardown.test b/unit-tests/test/script/parser/setup-teardown.test
index 5d30ed4..c9183ef 100644
--- a/unit-tests/test/script/parser/setup-teardown.test
+++ b/unit-tests/test/script/parser/setup-teardown.test
@@ -1,43 +1,83 @@
-$* <"+cmd;" 2>>EOE != 0                 # semi-after-setup
-testscript:1:5: error: ';' after setup command
-EOE
-
-$* <"+cmd:" 2>>EOE != 0                 # colon-after-setup
-testscript:1:5: error: ':' after setup command
-EOE
-
-$* <"-cmd;" 2>>EOE != 0                 # semi-after-tdown
-testscript:1:5: error: ';' after teardown command
-EOE
-
-$* <"-cmd:" 2>>EOE != 0                 # colon-after-tdown
-testscript:1:5: error: ':' after teardown command
-EOE
-
-$* <<EOI 2>>EOE != 0                 # setup-in-test
-cmd;
-+cmd
-EOI
-testscript:2:1: error: setup command in test
-EOE
-
-$* <<EOI 2>>EOE != 0                 # tdown-in-test
-cmd;
--cmd
-EOI
-testscript:2:1: error: teardown command in test
-EOE
-
-$* <<EOI 2>>EOE != 0                 # setup-after-test
-cmd
-+cmd
-EOI
-testscript:2:1: error: setup command after tests
-EOE
-
-$* <<EOI 2>>EOE != 0                 # setup-after-tdownt
--cmd
-+cmd
-EOI
-testscript:2:1: error: setup command after teardown
-EOE
+# file      : unit-tests/test/script/parser/setup-teardown.test
+# copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+
+: setup
+:
+{
+  : followed
+  :
+  {
+    : semi
+    :
+    $* <"+cmd;" 2>>EOE != 0
+    testscript:1:5: error: ';' after setup command
+    EOE
+
+    : colon
+    :
+    $* <"+cmd:" 2>>EOE != 0
+    testscript:1:5: error: ':' after setup command
+    EOE
+  }
+
+  : after
+  :
+  {
+    : test
+    :
+    $* <<EOI 2>>EOE != 0
+    cmd
+    +cmd
+    EOI
+    testscript:2:1: error: setup command after tests
+    EOE
+
+    : after-tdownt
+    :
+    $* <<EOI 2>>EOE != 0
+    -cmd
+    +cmd
+    EOI
+    testscript:2:1: error: setup command after teardown
+    EOE
+  }
+
+  : in-test
+  :
+  $* <<EOI 2>>EOE != 0
+  cmd;
+  +cmd
+  EOI
+  testscript:2:1: error: setup command in test
+  EOE
+}
+
+: tdown
+:
+{
+  : followed
+  :
+  {
+    : semi
+    :
+    $* <"-cmd;" 2>>EOE != 0
+    testscript:1:5: error: ';' after teardown command
+    EOE
+
+    : colon
+    :
+    $* <"-cmd:" 2>>EOE != 0
+    testscript:1:5: error: ':' after teardown command
+    EOE
+  }
+
+  : in-test
+  :
+  $* <<EOI 2>>EOE != 0
+  cmd;
+  -cmd
+  EOI
+  testscript:2:1: error: teardown command in test
+  EOE
+}