Implement in module

Given test.in containing something along these lines:

foo = $foo$

Now we can do:

using in

file{test}: in{test.in}
file{test}: foo = FOO

The alternative variable substitution symbol can be specified with the
in.symbol variable and lax (instead of the default strict) mode with
in.substitution. For example:

file{test}: in.symbol = '@'
file{test}: in.substitution = lax

1 files changed, 5 insertions, 0 deletions

diff --git a/tests/in/buildfile b/tests/in/buildfile
new file mode 100644
index 0000000..54d3b90
--- /dev/null
+++ b/tests/in/buildfile
@@ -0,0 +1,5 @@
+# file      : tests/in/buildfile
+# copyright : Copyright (c) 2014-2018 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+
+./: testscript $b