[manoj-1407]

Git's wildmatch treats a run of three or more asterisks that makes up a whole path segment the same as **. pathspec treats it as a single *, so patterns like ***/x don't match what git matches.

Example, checked against git check-ignore:

pattern  ***/x
git:       x, a/x, a/b/x   ignored
pathspec:  only x          (a/x and a/b/x not matched)

Same for a/***, a/***/b and ****/x.

This collapses such segments to ** before the pattern is translated, in both GitIgnoreBasicPattern and GitIgnoreSpecPattern, via a small _collapse_star_runs helper in gitignore/base.py. A run of asterisks inside a segment with other characters (a***b) is unchanged and still acts like *.

Added tests/test_10_gitignore_star_runs.py, which covers both pattern classes and GitIgnoreSpec.from_lines. Full suite passes (290 tests). I also added a line under Bug fixes in CHANGES_1.in.rst.

I searched the open issues and PRs for ***, "asterisk" and "globstar" and didn't find one for this case. #45 and #164 look related but are about other globstar cases.

[cpburnz]

Thanks for finding and fixing this!