Re: [PATCH 2/2] gitignore.txt: clarify recursive nature of excluded directories

[Junio C Hamano <gitster@pobox.com>]

Karsten Blees <karsten.blees@gmail.com> writes:

> Additionally, precedence of negated patterns is exactly as outlined in
> the DESCRIPTION section, we don't need to repeat this.

Very good, thanks.

Even though I have a suspicion that somebody else may be able to
come up with a better phrase that does not sound unnecessarily
strongly than "recursively and irrevocably", that somebody else is
not me, so I'll queue this as-is for now.

>
> Signed-off-by: Karsten Blees <blees@dcon.de>
> ---
>  Documentation/gitignore.txt | 18 ++++++++++++++++--
>  1 file changed, 16 insertions(+), 2 deletions(-)
>
> diff --git a/Documentation/gitignore.txt b/Documentation/gitignore.txt
> index f971960..5ecc48e 100644
> --- a/Documentation/gitignore.txt
> +++ b/Documentation/gitignore.txt
> @@ -79,8 +79,9 @@ PATTERN FORMAT
>  
>   - An optional prefix "`!`" which negates the pattern; any
>     matching file excluded by a previous pattern will become
> -   included again.  If a negated pattern matches, this will
> -   override lower precedence patterns sources.
> +   included again. It is not possible to re-include a file if a parent
> +   directory of that file is excluded (i.e. excluding a directory
> +   will recursively and irrevocably exclude the entire content).
>     Put a backslash ("`\`") in front of the first "`!`" for patterns
>     that begin with a literal "`!`", for example, "`\!important!.txt`".
>  
> @@ -182,6 +183,19 @@ Another example:
>  The second .gitignore prevents Git from ignoring
>  `arch/foo/kernel/vmlinux.lds.S`.
>  
> +Example to exclude everything except a specific directory `foo/bar`
> +(note the `/*` - without the slash, the wildcard would also exclude
> +everything within `foo/bar`):
> +
> +--------------------------------------------------------------
> +    $ cat .gitignore
> +    # exclude everything except directory foo/bar
> +    /*
> +    !/foo
> +    /foo/*
> +    !/foo/bar
> +--------------------------------------------------------------
> +
>  SEE ALSO
>  --------
>  linkgit:git-rm[1],