[Bug build/34295] [gdb/build] Make pre-commit config file more maintainable

https://sourceware.org/bugzilla/show_bug.cgi?id=34295

--- Comment #2 from Sourceware Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Tom de Vries <[email protected]>:

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=2b28c50ecd058b3fe0328d1bf5f7bc06fd8ca41c

commit 2b28c50ecd058b3fe0328d1bf5f7bc06fd8ca41c
Author: Tom de Vries <[email protected]>
Date:   Mon Jul 13 13:11:06 2026 +0200

    [pre-commit] Remove duplication in config file

    In a recent commit, I introduced anchor/alias pairs in
    .pre-commit-config.yaml, with short non-descriptive names for local use:
    ...
    -    - id: check-include-guards
    -      name: check-include-guards
    +    - id: &id0 check-include-guards
    +      name: *id0
    ...

    Use anchors and aliases a bit more to remove duplication, now using more
    descriptive names for non-local uses.

    Yaml also supports defining an anchor for more than one field, which result
in
    cleaner code:
    ...
    +python-files: &python-files
    +  types_or: [file]
    +  files: '^gdb/.*\.py(\.in)?$'
    +
      ...
           - id: black
    -        types_or: [file]
    -        files: '^gdb/.*\.py(\.in)?$'
    +        <<: *python-files
    ...
    but unfortunately pre-commit generates a warning "[WARNING] Unexpected
key(s)
    present at root: python-files" for this [1].

    Also add a default files setting.

    Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=34295

    [1] https://github.com/pre-commit/pre-commit/issues/1481

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