Extended regular expressions (ERE) for .gitignore
git, gitignore, metacharacters, regex
Solution
As illustrated here and detailed in "this question", the function fnmatch() is involved to interpret glob patterns, which means regular expressions are not supported.
This is what `gitignore` man page mentions:
Otherwise, `git treats the pattern as a shell glob suitable for consumption by fnmatch(3)` with the `FNM_PATHNAME` flag: wildcards in the pattern will not match a `/` in the pathname. For example, "`Documentation/*.html`" matches "`Documentation/git.html`" but not "`Documentation/ppc/ppc.html`" or "`tools/perf/Documentation/perf.html`".
You can see some correspondence between glob patterns and regular expressions in those questions.
Problem
Is there a way to use extended regular expressions(ERE) in a `.gitignore` file? For example I want to use the `+` repetition character in a `.gitignore` file. Is there a way to do that?