Re: Gitignore documentation

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Maris Razvan <razvan.alex.maris@xxxxxxxxx> writes:

> I was reading the gitignore documentation
> (https://git-scm.com/docs/gitignore), especially the following
> paragraph:
>
>          "If the pattern does not contain a slash /, Git treats it as
> a shell glob pattern and checks for a match against the pathname
> relative to the location of the .gitignore file (relative to the
> toplevel of the work tree if not from a .gitignore file)."
>
> From that paragraph I understand that if I have the following
> directory structure:
>
>         .gitignore
>         a
>             f
>
> (the root of the repository contains the file .gitignore and the
> folder a, while the file f is inside folder a)
> where the file .gitignore contains only the pattern f, when file "f"
> is tested whether it should be ignored or not, the pattern f in
> .gitignore is matched against the "pathname relative to the location
> of the .gitignore file" (which is a/f). Because "f" (the pattern) does
> not match "a/f" (the pathname relative to the location of .gitignore),
> the file "f" should not be ignored. However, if I test this scenario,
> git ignores the file (this behaviour is consistent with the examples
> from the rest of the documentation and other explanations on the
> internet).
>
> I looked at the history of the "Documentation/gitignore.txt" file on
> the github repository and I saw that initially the paragraph looked
> like this:
>
>         "If the pattern does not contain a slash '/', git treats it as
> a shell glob pattern and checks for a match against the pathname
> without leading directories."
>
> This old version of the paragraph is consistent with git's current behaviour.
>
> Then I saw the following commit
> https://github.com/git/git/commit/81c13fde379c46cad6b6e4a03ed7ee4f686c030f#diff-7fea460d44f92f185e7add8aa5620305,
> which changed that paragraph to the current version.
> However, I cannot see how the two wordings (the original one and the
> current one) are the same.

Thanks.

Jonathan, after re-reading 81c13fde ("gitignore.5: Clarify matching
rules", 2010-03-05), I do not recall why we thought this part of the
change was a good idea, either.  Patterns with slash is anchored at
one directory, and that directory is the one that has per-directory
.gitignore file.  Patterns without slash (including a pattern that
ends with but otherwise has no other slash) are supposed to match at
every level below the directory that the pattern is defined in.








 Documentation/gitignore.txt | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/Documentation/gitignore.txt b/Documentation/gitignore.txt
index 1c94f08ff4..bf1182169e 100644
--- a/Documentation/gitignore.txt
+++ b/Documentation/gitignore.txt
@@ -98,9 +98,7 @@ PATTERN FORMAT
 
  - If the pattern does not contain a slash '/', Git treats it as
    a shell glob pattern and checks for a match against the
-   pathname relative to the location of the `.gitignore` file
-   (relative to the toplevel of the work tree if not from a
-   `.gitignore` file).
+   pathname without leading directories.
 
  - Otherwise, Git treats the pattern as a shell glob: "`*`" matches
    anything except "`/`", "`?`" matches any one character except "`/`"



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