oneway_merge(): only lstat() when told to update worktree

diff --git a/Documentation/git-mailinfo.txt b/Documentation/git-mailinfo.txt
index ed45662cc9bb0ef93c6748d02e3791ac915830f9..97e7a8e9e7cc01bc350d57ca66e08f5ed96221de 100644 (file)
--- a/Documentation/git-mailinfo.txt
+++ b/Documentation/git-mailinfo.txt
@@ -8,6 +8,7 @@ git-mailinfo - Extracts patch and authorship from a single e-mail message
 
 SYNOPSIS
 --------
+[verse]
 'git mailinfo' [-k|-b] [-u | --encoding=<encoding> | -n] [--scissors] <msg> <patch>
 
 
@@ -24,13 +25,24 @@ command directly.  See linkgit:git-am[1] instead.
 OPTIONS
 -------
 -k::
-       Usually the program 'cleans up' the Subject: header line
-       to extract the title line for the commit log message,
-       among which (1) remove 'Re:' or 're:', (2) leading
-       whitespaces, (3) '[' up to ']', typically '[PATCH]', and
-       then prepends "[PATCH] ".  This flag forbids this
-       munging, and is most useful when used to read back
-       'git format-patch -k' output.
+       Usually the program removes email cruft from the Subject:
+       header line to extract the title line for the commit log
+       message.  This option prevents this munging, and is most
+       useful when used to read back 'git format-patch -k' output.
++
+Specifically, the following are removed until none of them remain:
++
+--
+*      Leading and trailing whitespace.
+
+*      Leading `Re:`, `re:`, and `:`.
+
+*      Leading bracketed strings (between `[` and `]`, usually
+       `[PATCH]`).
+--
++
+Finally, runs of whitespace are normalized to a single ASCII space
+character.
 
 -b::
        When -k is not in effect, all leading strings bracketed with '['