pretty: Introduce ' ' modifier to add space if non-empty

diff --git a/Documentation/pretty-formats.txt b/Documentation/pretty-formats.txt
index b055a673d83bcf4c106f3f703ca7f4db4ca1d60f..561cc9f7d7ef1a2502d608e59e2eae345bffd685 100644 (file)
--- a/Documentation/pretty-formats.txt
+++ b/Documentation/pretty-formats.txt
@@ -11,7 +11,12 @@ 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:
+There are several built-in formats, and you can define
+additional formats by setting a pretty.<name>
+config option to either another format name, or a
+'format:' string, as described below (see
+linkgit:git-config[1]). Here are the details of the
+built-in formats:
 
 * 'oneline'
 
@@ -154,6 +159,10 @@ If you add a `-` (minus sign) after '%' of a placeholder, line-feeds that
 immediately precede the expansion are deleted if and only if the
 placeholder expands to an empty string.
 
+If you add a ` ` (space) after '%' of a placeholder, a space
+is inserted immediately before the expansion if and only if the
+placeholder expands to a non-empty string.
+
 * 'tformat:'
 +
 The 'tformat:' format works exactly like 'format:', except that it