[PATCH 3/4] Makefile: match shell scripts in FIND_SOURCE_FILES

We feed FIND_SOURCE_FILES to ctags to help developers navigate to particular functions, but we only feed C source code. The same feature can be helpful when working with shell scripts (especially the test suite). Modern versions of ctags know how to parse shell scripts; we just need to feed the filenames to it.

This patch specifically avoids including the individual test scripts themselves. Those are unlikely to be of interest, and there are a lot of them to process. It does pick up test-lib.sh and test-lib-functions.sh.

Note that our negative pathspec already excludes the individual scripts for the ls-files case, but we need to loosen the `find` rule to match it.

Signed-off-by: Jeff King <peff@peff.net>
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Maybe people would find this annoying. It does increase the number of
entries in the tags file. I've been running something like it for a few
months and have found it useful.

It's also possible that some people have a version of ctags or etags that doesn't handle shell scripts. I imagine few enough people actually run "make tags" in the first place that we can probably try it and see.

 Makefile | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)