diff options
| -rw-r--r-- | Documentation/config.txt | 12 | ||||
| -rw-r--r-- | builtin-grep.c | 36 | ||||
| -rw-r--r-- | grep.h | 1 |
3 files changed, 48 insertions, 1 deletions
diff --git a/Documentation/config.txt b/Documentation/config.txt index b75dada9c..4d42bff71 100644 --- a/Documentation/config.txt +++ b/Documentation/config.txt @@ -553,9 +553,19 @@ color.grep:: `never`), never. When set to `true` or `auto`, use color only when the output is written to the terminal. Defaults to `false`. +color.grep.external:: + The string value of this variable is passed to an external 'grep' + command as a command line option if match highlighting is turned + on. If set to an empty string, no option is passed at all, + turning off coloring for external 'grep' calls; this is the default. + For GNU grep, set it to `--color=always` to highlight matches even + when a pager is used. + color.grep.match:: Use customized color for matches. The value of this variable - may be specified as in color.branch.<slot>. + may be specified as in color.branch.<slot>. It is passed using + the environment variables 'GREP_COLOR' and 'GREP_COLORS' when + calling an external 'grep'. color.interactive:: When set to `always`, always use colors for interactive prompts diff --git a/builtin-grep.c b/builtin-grep.c index e2c0f0161..9e7e766a4 100644 --- a/builtin-grep.c +++ b/builtin-grep.c @@ -30,6 +30,10 @@ static int grep_config(const char *var, const char *value, void *cb) opt->color = git_config_colorbool(var, value, -1); return 0; } + if (!strcmp(var, "grep.color.external") || + !strcmp(var, "color.grep.external")) { + return git_config_string(&(opt->color_external), var, value); + } if (!strcmp(var, "grep.color.match") || !strcmp(var, "color.grep.match")) { if (!value) @@ -287,6 +291,21 @@ static int flush_grep(struct grep_opt *opt, return status; } +static void grep_add_color(struct strbuf *sb, const char *escape_seq) +{ + size_t orig_len = sb->len; + + while (*escape_seq) { + if (*escape_seq == 'm') + strbuf_addch(sb, ';'); + else if (*escape_seq != '\033' && *escape_seq != '[') + strbuf_addch(sb, *escape_seq); + escape_seq++; + } + if (sb->len > orig_len && sb->buf[sb->len - 1] == ';') + strbuf_setlen(sb, sb->len - 1); +} + static int external_grep(struct grep_opt *opt, const char **paths, int cached) { int i, nr, argc, hit, len, status; @@ -357,6 +376,23 @@ static int external_grep(struct grep_opt *opt, const char **paths, int cached) push_arg("-e"); push_arg(p->pattern); } + if (opt->color) { + struct strbuf sb = STRBUF_INIT; + + grep_add_color(&sb, opt->color_match); + setenv("GREP_COLOR", sb.buf, 1); + + strbuf_reset(&sb); + strbuf_addstr(&sb, "mt="); + grep_add_color(&sb, opt->color_match); + strbuf_addstr(&sb, ":sl=:cx=:fn=:ln=:bn=:se="); + setenv("GREP_COLORS", sb.buf, 1); + + strbuf_release(&sb); + + if (opt->color_external && strlen(opt->color_external) > 0) + push_arg(opt->color_external); + } hit = 0; argc = nr; @@ -80,6 +80,7 @@ struct grep_opt { unsigned null_following_name:1; int color; char color_match[COLOR_MAXLEN]; + const char *color_external; int regflags; unsigned pre_context; unsigned post_context; |