Re: [PATCH 4/4] git-prompt.sh: add missing information in comments

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On Thu, Jun 20, 2013 at 11:25:29PM -0300, Eduardo R. D'Avila wrote:
> Mention that the command below is needed for prompt
> in ZSH with PS1:
>   setopt PROMPT_SUBST
> 
> Make it clear that colored prompt is only available
> in PROMPT_COMMAND mode.
> 
> Signed-off-by: Eduardo R. D'Avila <erdavila@xxxxxxxxx>
> ---
> 5	4	contrib/completion/git-prompt.sh
>  contrib/completion/git-prompt.sh | 9 +++++----
>  1 file changed, 5 insertions(+), 4 deletions(-)
> 
> diff --git a/contrib/completion/git-prompt.sh b/contrib/completion/git-prompt.sh
> index 70515cc..3ab2a69 100644
> --- a/contrib/completion/git-prompt.sh
> +++ b/contrib/completion/git-prompt.sh
> @@ -13,10 +13,10 @@
>  #    3a) Change your PS1 to call __git_ps1 as
>  #        command-substitution:
>  #        Bash: PS1='[\u@\h \W$(__git_ps1 " (%s)")]\$ '
> -#        ZSH:  PS1='[%n@%m %c$(__git_ps1 " (%s)")]\$ '
> +#        ZSH:  setopt PROMPT_SUBST ; PS1='[%n@%m %c$(__git_ps1 " (%s)")]\$ '
>  #        the optional argument will be used as format string.
> -#    3b) Alternatively, if you are using bash, __git_ps1 can be
> -#        used for PROMPT_COMMAND with two parameters, <pre> and
> +#    3b) Alternatively, if you are using Bash or ZSH, __git_ps1 can
> +#        be used for PROMPT_COMMAND with two parameters, <pre> and

The git-prompt script only supports bash and zsh, so that "if you are
using Bash or ZSH" part doesn't say much, does it?  Furthermore, zsh
doesn't have PROMPT_COMMAND but a similar facility.  So how about
something like this instead?

#    3b) Alternatively, __git_ps1 can be used for PROMPT_COMMAND in
#        Bash or for precmd in ZSH with two parameters, <pre> and


>  #        <post>, which are strings you would put in $PS1 before
>  #        and after the status string generated by the git-prompt
>  #        machinery.  e.g.
> @@ -78,7 +78,8 @@
>  #
>  # If you would like a colored hint about the current dirty state, set
>  # GIT_PS1_SHOWCOLORHINTS to a nonempty value. The colors are based on
> -# the colored output of "git status -sb".
> +# the colored output of "git status -sb" and are available only when
> +# using __git_ps1 for PROMPT_COMMAND.

Likewise:

# using __git_ps1 for PROMPT_COMMAND or precmd.

>  
>  # __gitdir accepts 0 or 1 arguments (i.e., location)
>  # returns location of .git repo
> -- 
> 1.8.3.1.487.g28387b2
> 
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