| commit | 351ea1c3cbf416b40cb999ea7426da633fa64918 | [log] [tgz] |
|---|---|---|
| author | Elijah Newren <newren@gmail.com> | Thu Jun 11 06:59:31 2020 +0000 |
| committer | Junio C Hamano <gitster@pobox.com> | Fri Jun 12 17:27:16 2020 -0700 |
| tree | dea4c3b1cd726f6b8fcf84a154a1e4d88bbb3ed0 | |
| parent | e6c0be92394ee658d97fd02a517d22192ac1eb55 [diff] |
dir, clean: avoid disallowed behavior
dir.h documented quite clearly that DIR_SHOW_IGNORED and
DIR_SHOW_IGNORED_TOO are mutually exclusive, with a big comment to this
effect by the definition of both enum values. However, a command like
git clean -fx $DIR
would set both values for dir.flags. I _think_ it happened to work
because:
* As dir.h points out, DIR_KEEP_UNTRACKED_CONTENTS only takes effect
if DIR_SHOW_IGNORED_TOO is set.
* As coded, I believe DIR_SHOW_IGNORED would just happen to take
precedence over DIR_SHOW_IGNORED_TOO in the code as currently
constructed.
Which is a long way of saying "we just got lucky".
Fix clean.c to avoid setting these mutually exclusive values at the same
time, and add a check to dir.c that will throw a BUG() to prevent anyone
else from making this mistake.
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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