Add $find(<sequence>, <value>), $find_index(<sequence>, <value>) functions

The $find() function returns true if the sequence contains the specified
value. The $find_index() function returns the index of the first element
in the sequence that is equal to the specified value or $size(<sequence>)
if none is found. For string sequences, it's possible to request case-
insensitive comparison with a flag.

1 files changed, 16 insertions, 0 deletions

diff --git a/tests/function/string/testscript b/tests/function/string/testscript
index 00835ce..364ce42 100644
--- a/tests/function/string/testscript
+++ b/tests/function/string/testscript
@@ -46,3 +46,19 @@
   $* <'print $size([string] abc)' >'3' : basics
   $* <'print $size([string] )'    >'0' : zero
 }
+
+: find
+:
+{
+  $* <'print $find([strings] x y z, y)'        >'true'  : basics-true
+  $* <'print $find([strings] x y z, Y)'        >'false' : basics-false
+  $* <'print $find([strings] x y z, Y, icase)' >'true'  : icase
+}
+
+: find_index
+:
+{
+  $* <'print $find_index([strings] x y z, y)'        >'1' : basics-true
+  $* <'print $find_index([strings] x y z, Y)'        >'3' : basics-false
+  $* <'print $find_index([strings] x y z, Y, icase)' >'1' : icase
+}