maintainers.go does not handle globs as described in MAINTAINERS.
Instead of only matching the files inside a directory, it also matches
everything below. Also, a glob used in between (`e.g. path/to/*/dir`)
could lead to matching many more paths unexpectedly.
This is caused by the way paths using globs are converted to regegular
expressions for use with gerrit:
1. The script converts all paths with trailing slash to a path with
trailing glob. That means, a recursive match on a directory gets
converted to match only the files in the directory (at least
according to the documentation - if there wasn't 2).
Example: `path/to/dir/` becomes `path/to/dir/*`
2. When converting the path to a regex, all globs get converted to
prefix matching by replacing the glob by `.*`. Instead of only
matching the files in the directory, everything below matches,
which is a) not what the documentation states and b) the opposite
of what 1. did first.
Example: `path/to/dir/*` becomes `^path/to/dir/.*$`
In sum, this leads to all sorts of issues. Examples:
- `path/*/dir` becomes `^path/.*/dir$`
- `path/to/dir/*` becomes `^path/to/dir/.*$`
- `path/to/*.c` becomes `^path/to/.*\.c$`
This change fixes that behaviour by:
- dropping the wrong conversion from 1. above.
- fixing glob matching by replacing `*` by `[^/]`.
- handling paths with trailing `/` as prefix, as documented.
The change was not split because these changes depend on each other and
splitting would break recursive matching between the commits.
Tests:
1. diffed output before and after is equal (!= the same)
2. manual testing of glob matching
Change-Id: I4347a60874e4f07e41bdee43cc312547bea99008
Signed-off-by: Michael Niewöhner <foss@mniewoehner.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/52275
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Nico Huber <nico.h@gmx.de>
158fed9ee7