Re: [PATCH 1/2] filter-branch: provide the convenience functions also for commit filters

Johannes Schindelin [off-list ref] writes:

+this_script="$(cd "$(dirname "$0")"; pwd)"/$(basename "$0")
...
+		filter_commit="SOURCE_FUNCTIONS=1 . \"$this_script\"; $OPTARG"

Hmmmmmm.

Care to enlighten why this is not just:

	filter_commit="SOURCE_FUNCTIONS=1 . \"$0\"; $OPTARG"

Is it because you cd(1) around in the script, and it can be
relative to where you started?

In either case, are you quoting potential funnies (such as '"'
or '\\') in "$0" sufficiently?  Exporting this_script variable,
and changing the above to

	filter_commit='SOURCE_FUNCTIONS=1 . "$this_script";'" $OPTARG"

to arrange the shell that is invoked with 'sh -c' to expand its
value would make it smaller problem, I suspect.