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builtin/grep.c: add '--column' option to 'git-grep(1)'

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Teach 'git-grep(1)' a new option, '--column', to show the column
number of the first match on a non-context line. This makes it possible
to teach 'contrib/git-jump/git-jump' how to seek to the first matching
position of a grep match in your editor, and allows similar additional
scripting capabilities.

For example:

  $ git grep -n --column foo | head -n3
  .clang-format:51:14:# myFunction(foo, bar, baz);
  .clang-format:64:7:# int foo();
  .clang-format:75:8:# void foo()

Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Taylor Blau
2018-06-22 10:49:45 -05:00
committed by Junio C Hamano
parent 89252cd069
commit a449f27ffa
3 changed files with 101 additions and 1 deletions
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builtin/grep.c
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@ -828,6 +828,7 @@ int cmd_grep(int argc, const char **argv, const char *prefix)
GREP_PATTERN_TYPE_PCRE),
OPT_GROUP(""),
OPT_BOOL('n', "line-number", &opt.linenum, N_("show line numbers")),
OPT_BOOL(0, "column", &opt.columnnum, N_("show column number of first match")),
OPT_NEGBIT('h', NULL, &opt.pathname, N_("don't show filenames"), 1),
OPT_BIT('H', NULL, &opt.pathname, N_("show filenames"), 1),
OPT_NEGBIT(0, "full-name", &opt.relative,