diff options
Diffstat (limited to 'Documentation/git-grep.txt')
| -rw-r--r-- | Documentation/git-grep.txt | 66 |
1 files changed, 57 insertions, 9 deletions
diff --git a/Documentation/git-grep.txt b/Documentation/git-grep.txt index 18b494731f..ddb6acc025 100644 --- a/Documentation/git-grep.txt +++ b/Documentation/git-grep.txt @@ -13,12 +13,12 @@ SYNOPSIS [-v | --invert-match] [-h|-H] [--full-name] [-E | --extended-regexp] [-G | --basic-regexp] [-P | --perl-regexp] - [-F | --fixed-strings] [-n | --line-number] + [-F | --fixed-strings] [-n | --line-number] [--column] [-l | --files-with-matches] [-L | --files-without-match] [(-O | --open-files-in-pager) [<pager>]] [-z | --null] - [-c | --count] [--all-match] [-q | --quiet] - [--max-depth <depth>] + [ -o | --only-matching ] [-c | --count] [--all-match] [-q | --quiet] + [--max-depth <depth>] [--[no-]recursive] [--color[=<when>] | --no-color] [--break] [--heading] [-p | --show-function] [-A <post-context>] [-B <pre-context>] [-C <context>] @@ -44,6 +44,9 @@ CONFIGURATION grep.lineNumber:: If set to true, enable `-n` option by default. +grep.column:: + If set to true, enable the `--column` option by default. + grep.patternType:: Set the default matching behavior. Using a value of 'basic', 'extended', 'fixed', or 'perl' will enable the `--basic-regexp`, `--extended-regexp`, @@ -56,8 +59,8 @@ grep.extendedRegexp:: other than 'default'. grep.threads:: - Number of grep worker threads to use. If unset (or set to 0), - 8 threads are used by default (for now). + Number of grep worker threads to use. If unset (or set to 0), Git will + use as many threads as the number of logical cores available. grep.fullName:: If set to true, enable `--full-name` option by default. @@ -85,7 +88,7 @@ OPTIONS mechanism. Only useful with `--untracked`. --exclude-standard:: - Do not pay attention to ignored files specified via the `.gitignore` + Do not pay attention to ignored files specified via the `.gitignore` mechanism. Only useful when searching files in the current directory with `--no-index`. @@ -93,7 +96,8 @@ OPTIONS Recursively search in each submodule that has been initialized and checked out in the repository. When used in combination with the <tree> option the prefix of all submodule output will be the name of - the parent project's <tree> object. + the parent project's <tree> object. This option has no effect + if `--no-index` is given. -a:: --text:: @@ -116,11 +120,18 @@ OPTIONS --max-depth <depth>:: For each <pathspec> given on command line, descend at most <depth> - levels of directories. A negative value means no limit. + levels of directories. A value of -1 means no limit. This option is ignored if <pathspec> contains active wildcards. In other words if "a*" matches a directory named "a*", "*" is matched literally so --max-depth is still effective. +-r:: +--recursive:: + Same as `--max-depth=-1`; this is the default. + +--no-recursive:: + Same as `--max-depth=0`. + -w:: --word-regexp:: Match the pattern only at word boundary (either begin at the @@ -169,6 +180,10 @@ providing this option will cause it to die. --line-number:: Prefix the line number to matching lines. +--column:: + Prefix the 1-indexed byte-offset of the first match from the start of the + matching line. + -l:: --files-with-matches:: --name-only:: @@ -194,6 +209,11 @@ providing this option will cause it to die. Output \0 instead of the character that normally follows a file name. +-o:: +--only-matching:: + Print only the matched (non-empty) parts of a matching line, with each such + part on a separate output line. + -c:: --count:: Instead of showing every matched line, show the number of @@ -252,6 +272,23 @@ providing this option will cause it to die. -f <file>:: Read patterns from <file>, one per line. ++ +Passing the pattern via <file> allows for providing a search pattern +containing a \0. ++ +Not all pattern types support patterns containing \0. Git will error +out if a given pattern type can't support such a pattern. The +`--perl-regexp` pattern type when compiled against the PCRE v2 backend +has the widest support for these types of patterns. ++ +In versions of Git before 2.23.0 patterns containing \0 would be +silently considered fixed. This was never documented, there were also +odd and undocumented interactions between e.g. non-ASCII patterns +containing \0 and `--ignore-case`. ++ +In future versions we may learn to support patterns containing \0 for +more search backends, until then we'll die when the pattern type in +question doesn't support them. -e:: The next parameter is the pattern. This option has to be @@ -293,7 +330,7 @@ providing this option will cause it to die. For more details about the <pathspec> syntax, see the 'pathspec' entry in linkgit:gitglossary[7]. -Examples +EXAMPLES -------- `git grep 'time_t' -- '*.[ch]'`:: @@ -311,6 +348,17 @@ Examples `git grep solution -- :^Documentation`:: Looks for `solution`, excluding files in `Documentation`. +NOTES ON THREADS +---------------- + +The `--threads` option (and the grep.threads configuration) will be ignored when +`--open-files-in-pager` is used, forcing a single-threaded execution. + +When grepping the object store (with `--cached` or giving tree objects), running +with multiple threads might perform slower than single threaded if `--textconv` +is given and there're too many text conversions. So if you experience low +performance in this case, it might be desirable to use `--threads=1`. + GIT --- Part of the linkgit:git[1] suite |