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--- git_searching [2019/02/21 13:32] – created rpjday
+++ git_searching [2019/02/21 14:17] (current) – [Config options] rpjday
@@ Line 7: / Line 7: @@
 Examples use the Git repository for the "Pro Git" book found [[https://github.com/progit/progit2|here]].
+===== Searching with "git log" =====
+The ''git log'' command supports looking for commits by the content of their commit messages, or even the content of the diff they introduced. All examples here can be enhanced with the regular ''git log'' options.
+==== Searching for author ====
+<code>
+$ git log --author="Robert P. J. Day"
+$ git log --author="Robert P\. J\. Day"
+$ git log --author="P\. J\."
+$ git log --author="Robert P. J. Day" --oneline
+$ git log --author="Robert P. J. Day" --oneline | wc -l
+$ git log -i --author="robert p. j. day"
+</code>
+==== Searching by date range ====
+<code>
+--since=<date>, --after=<date>
+    Show commits more recent than a specific date.
+--until=<date>, --before=<date>
+    Show commits older than a specific date.
+</code>
+So:
+<code>
+$ git log --since="Feb 1, 2019"
+$ git log --author="Ben Straub" --since="Jan 1, 2019" --until="Feb 1, 2019"
+</code>
+==== Using the "--grep" option ====
+<code>
+--grep=<pattern>
+    Limit the commits output to ones with log message that
+    matches the specified pattern (regular expression). With
+    more than one --grep=<pattern>, commits whose message
+    matches any of the given patterns are chosen (but see
+    --all-match).
+...
+--all-match
+    Limit the commits output to ones that match all given
+    --grep, instead of ones that match at least one.
+--invert-grep
+    Limit the commits output to ones with log message that do
+    not match the pattern specified with --grep=<pattern>.
+</code>
+Ignoring case:
+<code>
+$ git log --grep="Tagging" --oneline | wc -l
+$ git log --grep="tagging" --oneline | wc -l
+$ git log -i --grep="tagging" --oneline | wc -l
+$
+</code>
+Specifying AND or OR:
+<code>
+$ git log -i --grep="tagging" --grep="rewording" --oneline | wc -l
+$ git log -i --grep="tagging" --grep="rewording" --all-match --oneline | wc -l
+$ git log -i --grep="tagging" --grep="rewording" --all-match
+commit 110e27b003c10b4574ee49a47a090e125d6c4811
+Merge: 72d6a54 a402fcf
+Author: Ben Straub <ben@straub.cc>
+Date:   Mon Oct 16 10:30:02 2017 -0700
+    Merge pull request #866 from rpjday/tagging
+    Add TIP to tagging section explaining "-l"; also some rewording
+commit a402fcf53fb0d8d0c165ca9ee9ce233ea955cb85
+Author: Robert P. J. Day <rpjday@crashcourse.ca>
+Date:   Mon Oct 16 01:44:21 2017 -0700
+    Add TIP to tagging section explaining "-l"; also some rewording
+      - Clarify the need for [-l|--llist]
+      - Some minor rewording
+$
+</code>
+==== Ignoring merge commits with "--no-merges" ====
+In many cases, merge commits are of no interest since they simply merge commits that produce actual change.
+<code>
+$ git log --author="Ben Straub" --oneline | wc -l
+$ git log --author="Ben Straub" --oneline --no-merges | wc -l
+$
+</code>
+===== Searching with "git grep" =====
+==== DESCRIPTION ====
+<code>
+Look for specified patterns in the tracked files in the work
+tree, blobs registered in the index file, or blobs in given
+tree objects. Patterns are lists of one or more search
+expressions separated by newline characters. An empty string as
+search expression matches all lines.
+</code>
+==== SYNOPSIS ====
+Options:
+<code>
+[-a | --text] [-I] [--textconv] [-i | --ignore-case] [-w | --word-regexp]
+  [-v | --invert-match] [-h|-H] [--full-name]
+  [-E | --extended-regexp] [-G | --basic-regexp]
+  [-P | --perl-regexp]
+  [-F | --fixed-strings] [-n | --line-number] [--column]
+  [-l | --files-with-matches] [-L | --files-without-match]
+  [(-O | --open-files-in-pager) [<pager>]]
+  [-z | --null]
+  [ -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>]
+  [-W | --function-context]
+  [--threads <num>]
+  [-f <file>] [-e] <pattern>
+  [--and|--or|--not|(|)|-e <pattern>...]
+  [-recurse-submodules] [--parent-basename <basename>]
+  [ [--[no-]exclude-standard] [--cached | --no-index | --untracked] | tree>...]
+  [--] [<pathspec>...]
+</code>
+==== Config options ====
+  * ''grep.lineNumber''
+  * ''grep.patternType''
+  * ''grep.extendedRegexp''
+  * ''grep.threads''
+  * ''grep.fullName''
+  * ''grep.fallbackToNoIndex''
+See ''man git-config''.
+==== Examples ====
+<code>
+$ git grep -il torvalds
+book/01-introduction/sections/history.asc
+book/07-git-tools/sections/debugging.asc
+$
+</code>