Match a pathspec against entries in an index.

This matches the pathspec against the files in the repository index.

NOTE: At the moment, the case sensitivity of this match is controlled by the current case-sensitivity of the index object itself and the USE_CASE and IGNORE_CASE flags will have no effect. This behavior will be corrected in a future release.

If out is not NULL, this returns a git_patchspec_match_list. That contains the list of all matched filenames (unless you pass the GIT_PATHSPEC_FAILURES_ONLY flag) and may also contain the list of pathspecs with no match (if you used the GIT_PATHSPEC_FIND_FAILURES flag). You must call git_pathspec_match_list_free() on this object.