regex pattern for find to remove conflict files from git

Question

I am trying to create a find command to find the files that git create when there is a conflicting rebase/merge.

.//Tools/tri_tri_intersect.h
.//Tools/tri_tri_intersect.cpp
.//Collisions/PBD/FiltersUtils_BACKUP_450361.cpp
.//Collisions/PBD/FiltersUtils_BASE_450361.cpp
.//Collisions/PBD/FiltersUtils_LOCAL_450361.cpp
.//Collisions/PBD/FiltersUtils_REMOTE_450361.cpp

From this list of files, I want a find command to select the last 4, the ones with BACKUP, LOCAL, REMOTE, BASE.

I have tried this find . -type f -regex '.+_((BACKUP)|(BASE)|(LOCAL)|(REMOTE))_.*' but doesn't work.

What would be the correct regex?

That worked. Can you explain the difference between adding it and not adding it? — jjcasmar, Feb 02 '23 at 21:26
At least for the GNU implementation, the default regextype is `emacs` - which supports an ERE-style `+` quantifier, but grouping and alternation must be escaped like POSIX BRE: `'.+_\(BACKUP\|BASE\|LOCAL\|REMOTE\)_.*'`. See also [Confusion with Linux find regex](https://unix.stackexchange.com/questions/560896/confusion-with-linux-find-regex) — steeldriver, Feb 02 '23 at 21:33
... but personally I'd probably avoid the confusion by sticking with standard glob patterns: `find . -type f \( -name '*_BACKUP_*' -o -name '*_BASE_*' -o -name '*_LOCAL_*' -o -name '*_REMOTE_*' \)` — steeldriver, Feb 02 '23 at 22:06
So there are some webpages that allow to test regex patterns. https://regexr.com/ or https://regex101.com/. I like them because they also teach what is each part of the regex doing, useful for debug it. But how can I know is they are emac, ERE, Posix BRE? — jjcasmar, Feb 02 '23 at 22:40
@jjcasmar it's complicated - see for example [Why does my regular expression work in X but not in Y?](https://unix.stackexchange.com/questions/119905/why-does-my-regular-expression-work-in-x-but-not-in-y) — steeldriver, Feb 02 '23 at 23:33

regex pattern for find to remove conflict files from git

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