stash: avoid sparse-index expansion for in-cone paths `git stash push -- <pathspec>` expands a sparse index before checking whether the pathspec matches any tracked paths. This is unnecessary when the pathspec is wholly inside the sparse-checkout cone and makes a path-limited stash proportional to the size of the full index. Use `pathspec_needs_expanded_index()` to expand only when a pathspec can match part of a sparse-directory entry, as `git rm` and `git reset` already do. Keep the full-index behavior for pathspecs that need it. Add compatibility coverage for literal, prefixed, wildcard, file, multiple, staged, and missing pathspecs. Add the corresponding path-limited stash case to p2000. On a cone-mode repository with 349,525 tracked paths and 49 sparse index entries, the best of three runs changed from 18.87s to 0.06s. Trace2 reported four index expansions before this change and none after it. Signed-off-by: Ted Nyman <tnyman@openai.com> Reviewed-by: Taylor Blau <ttaylorr@openai.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Git is a fast, scalable, distributed revision control system with an unusually rich command set that provides both high-level operations and full access to internals.
Git is an Open Source project covered by the GNU General Public License version 2 (some parts of it are under different licenses, compatible with the GPLv2). It was originally written by Linus Torvalds with help of a group of hackers around the net.
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The name “git” was given by Linus Torvalds when he wrote the very first version. He described the tool as “the stupid content tracker” and the name as (depending on your mood):