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+PRETTY FORMATS
+--------------
+
+If the commit is a merge, and if the pretty-format
+is not 'oneline', 'email' or 'raw', an additional line is
+inserted before the 'Author:' line. This line begins with
+"Merge: " and the sha1s of ancestral commits are printed,
+separated by spaces. Note that the listed commits may not
+necessarily be the list of the *direct* parent commits if you
+have limited your view of history: for example, if you are
+only interested in changes related to a certain directory or
+file.
+
+Here are some additional details for each format:
+
+* 'oneline'
+
+ <sha1> <title line>
++
+This is designed to be as compact as possible.
+
+* 'short'
+
+ commit <sha1>
+ Author: <author>
+
+ <title line>
+
+* 'medium'
+
+ commit <sha1>
+ Author: <author>
+ Date: <author date>
+
+ <title line>
+
+ <full commit message>
+
+* 'full'
+
+ commit <sha1>
+ Author: <author>
+ Commit: <committer>
+
+ <title line>
+
+ <full commit message>
+
+* 'fuller'
+
+ commit <sha1>
+ Author: <author>
+ AuthorDate: <author date>
+ Commit: <committer>
+ CommitDate: <committer date>
+
+ <title line>
+
+ <full commit message>
+
+* 'email'
+
+ From <sha1> <date>
+ From: <author>
+ Date: <author date>
+ Subject: [PATCH] <title line>
+
+ <full commit message>
+
+* 'raw'
++
+The 'raw' format shows the entire commit exactly as
+stored in the commit object. Notably, the SHA1s are
+displayed in full, regardless of whether --abbrev or
+--no-abbrev are used, and 'parents' information show the
+true parent commits, without taking grafts nor history
+simplification into account.
+
+* 'format:'
++
+The 'format:' format allows you to specify which information
+you want to show. It works a little bit like printf format,
+with the notable exception that you get a newline with '%n'
+instead of '\n'.
++
+E.g, 'format:"The author of %h was %an, %ar%nThe title was >>%s<<%n"'
+would show something like this:
++
+-------
+The author of fe6e0ee was Junio C Hamano, 23 hours ago
+The title was >>t4119: test autocomputing -p<n> for traditional diff input.<<
+
+--------
++
+The placeholders are:
+
+- '%H': commit hash
+- '%h': abbreviated commit hash
+- '%T': tree hash
+- '%t': abbreviated tree hash
+- '%P': parent hashes
+- '%p': abbreviated parent hashes
+- '%an': author name
+- '%aN': author name (respecting .mailmap)
+- '%ae': author email
+- '%ad': author date (format respects --date= option)
+- '%aD': author date, RFC2822 style
+- '%ar': author date, relative
+- '%at': author date, UNIX timestamp
+- '%ai': author date, ISO 8601 format
+- '%cn': committer name
+- '%cN': committer name (respecting .mailmap)
+- '%ce': committer email
+- '%cd': committer date
+- '%cD': committer date, RFC2822 style
+- '%cr': committer date, relative
+- '%ct': committer date, UNIX timestamp
+- '%ci': committer date, ISO 8601 format
+- '%e': encoding
+- '%s': subject
+- '%b': body
+- '%Cred': switch color to red
+- '%Cgreen': switch color to green
+- '%Cblue': switch color to blue
+- '%Creset': reset color
+- '%m': left, right or boundary mark
+- '%n': newline
+- '%x00': print a byte from a hex code
+
+* 'tformat:'
++
+The 'tformat:' format works exactly like 'format:', except that it
+provides "terminator" semantics instead of "separator" semantics. In
+other words, each commit has the message terminator character (usually a
+newline) appended, rather than a separator placed between entries.
+This means that the final entry of a single-line format will be properly
+terminated with a new line, just as the "oneline" format does.
+For example:
++
+---------------------
+$ git log -2 --pretty=format:%h 4da45bef \
+ | perl -pe '$_ .= " -- NO NEWLINE\n" unless /\n/'
+4da45be
+7134973 -- NO NEWLINE
+
+$ git log -2 --pretty=tformat:%h 4da45bef \
+ | perl -pe '$_ .= " -- NO NEWLINE\n" unless /\n/'
+4da45be
+7134973
+---------------------