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authorLibravatar Thomas Gummerer <t.gummerer@gmail.com>2019-11-13 15:01:36 +0000
committerLibravatar Junio C Hamano <gitster@pobox.com>2019-11-14 11:08:25 +0900
commitdf53c80822735ddd30638ba77be3face438d5ad8 (patch)
tree22889a0e787a22769cdc456780220cb23a412dd7 /Documentation/RelNotes/2.24.0.txt
parentstash: make sure to write refreshed cache (diff)
downloadtgif-df53c80822735ddd30638ba77be3face438d5ad8.tar.xz
stash: make sure we have a valid index before writing it
In 'do_apply_stash()' we refresh the index in the end. Since 34933d0eff ("stash: make sure to write refreshed cache", 2019-09-11), we also write that refreshed index when --quiet is given to 'git stash apply'. However if '--index' is not given to 'git stash apply', we also discard the index in the else clause just before. We need to do so because we use an external 'git update-index --add --stdin', which leads to an out of date in-core index. Later we call 'refresh_and_write_cache', which now leads to writing the discarded index, which means we essentially write an empty index file. This is obviously not correct, or the behaviour the user wanted. We should not modify the users index without being asked to do so. Make sure to re-read the index after discarding the current in-core index, to avoid dealing with outdated information. Instead we could also drop the 'discard_cache()' + 'read_cache()', however that would make it easy to fall into the same trap as 34933d0eff did, so it's better to avoid that. We can also drop the 'refresh_and_write_cache' completely in the quiet case. Previously in legacy stash we relied on 'git status' to refresh the index after calling 'git read-tree' when '--index' was passed to 'git apply'. However the 'reset_tree()' call that replaced 'git read-tree' always passes options that are equivalent to '-m', making the refresh of the index unnecessary. Reported-by: Grzegorz Rajchman <rayman17@gmail.com> Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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