Ramkumar Ramachandra <artag...@gmail.com> writes:

> Enhance 'git for-each-ref' with color formatting options.  You can now
> use the following format in for-each-ref:
>
>   %C(green)%(refname:short)%C(reset)

So far, every magic for-each-ref takes were of form %(...); was
there a reason why this had to be %C(...), not %(color=blah), or
something more in-line with the existing other magic?

>
> Signed-off-by: Ramkumar Ramachandra <artag...@gmail.com>
> ---
>  Documentation/git-for-each-ref.txt |  4 +++-
>  builtin/for-each-ref.c             | 23 +++++++++++++++++++----
>  2 files changed, 22 insertions(+), 5 deletions(-)
>
> diff --git a/Documentation/git-for-each-ref.txt 
> b/Documentation/git-for-each-ref.txt
> index f2e08d1..6fa4464 100644
> --- a/Documentation/git-for-each-ref.txt
> +++ b/Documentation/git-for-each-ref.txt
> @@ -45,7 +45,9 @@ OPTIONS
>       It also interpolates `%%` to `%`, and `%xx` where `xx`
>       are hex digits interpolates to character with hex code
>       `xx`; for example `%00` interpolates to `\0` (NUL),
> -     `%09` to `\t` (TAB) and `%0a` to `\n` (LF).
> +     `%09` to `\t` (TAB) and `%0a` to `\n` (LF). Additionally,
> +     colors can be specified using `%C(...)`, with names
> +     described in color.branch.*.
>  
>  <pattern>...::
>       If one or more patterns are given, only refs are shown that
> diff --git a/builtin/for-each-ref.c b/builtin/for-each-ref.c
> index 1d4083c..6da2903 100644
> --- a/builtin/for-each-ref.c
> +++ b/builtin/for-each-ref.c
> @@ -9,6 +9,7 @@
>  #include "quote.h"
>  #include "parse-options.h"
>  #include "remote.h"
> +#include "color.h"
>  
>  /* Quoting styles */
>  #define QUOTE_NONE 0
> @@ -155,10 +156,13 @@ static const char *find_next(const char *cp)
>       while (*cp) {
>               if (*cp == '%') {
>                       /*
> +                      * %C( is the start of a color;
>                        * %( is the start of an atom;
>                        * %% is a quoted per-cent.
>                        */
> -                     if (cp[1] == '(')
> +                     if (cp[1] == 'C' && cp[2] == '(')
> +                             return cp;
> +                     else if (cp[1] == '(')
>                               return cp;
>                       else if (cp[1] == '%')
>                               cp++; /* skip over two % */
> @@ -180,8 +184,11 @@ static int verify_format(const char *format)
>               const char *ep = strchr(sp, ')');
>               if (!ep)
>                       return error("malformed format string %s", sp);
> -             /* sp points at "%(" and ep points at the closing ")" */
> -             parse_atom(sp + 2, ep);
> +             /* Ignore color specifications: %C(
> +              * sp points at "%(" and ep points at the closing ")"
> +              */
> +             if (prefixcmp(sp, "%C("))
> +                     parse_atom(sp + 2, ep);
>               cp = ep + 1;
>       }
>       return 0;
> @@ -933,12 +940,20 @@ static void emit(const char *cp, const char *ep)
>  static void show_ref(struct refinfo *info, const char *format, int 
> quote_style)
>  {
>       const char *cp, *sp, *ep;
> +     char color[COLOR_MAXLEN] = "";
>  
>       for (cp = format; *cp && (sp = find_next(cp)); cp = ep + 1) {
>               ep = strchr(sp, ')');
>               if (cp < sp)
>                       emit(cp, sp);
> -             print_value(info, parse_atom(sp + 2, ep), quote_style);
> +
> +             /* Do we have a color specification? */
> +             if (!prefixcmp(sp, "%C("))
> +                     color_parse_mem(sp + 3, ep - sp - 3, "--format", color);
> +             else {
> +                     printf("%s", color);
> +                     print_value(info, parse_atom(sp + 2, ep), quote_style);
> +             }
>       }
>       if (*cp) {
>               sp = cp + strlen(cp);
--
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