support `--incl` & `--excl` when `--loc=ins,del`

[tredeske]

Using the containerized version (podman on linux), --excl appears to have no effect on loc or other stats.

$ podman run --rm -it --userns=keep-id -v /path/to/myrepo:/repo:Z casperdcl/git-fame -s --since 91.days --cost cocomo -M -C --excl='.*' --loc 'ins,del'

$ podman run --rm -it --userns=keep-id -v /path/to/myrepo:/repo:Z casperdcl/git-fame -v
2.0.1

$ git --version
git version 2.31.1

Exclusions tried:

• --excl='dir' - to exclude a dir
• --excl='.*/dir/.*' - to exclude a dir
• --excl='.*dir/.*' - to exclude a dir
• --excl='.*file.*' - to exclude a file
• --excl='.*' - exclude everything

Using -n with explicitly listed files also fails to exclude.

Using --log=DEBUG verifies that the regex was received by git-fame as expected.

Using --incl='regex' also appears to have no effect. Examples:

• --incl='.*file' - should just include the one file, but includes all files
• --incl='non-existent-file' - still includes everything

[ntcong]

if you use any loc other than surv, the excl parameter got ignored

[twam]

Maybe something worth mentioning on --help. :)

[tredeske]

An update to the cmdline help would be useful, as would emitting an error if loc conflicts with excl. Better would be enabling excl to have an effect regardless of loc.