is one of "ext" and "pserver") to make them apply only for the given
access method.
+grep.lineNumber::
+ If set to true, enable '-n' option by default.
+
+grep.extendedRegexp::
+ If set to true, enable '--extended-regexp' option by default.
+
gui.commitmsgwidth::
Defines how wide the commit message window is in the
linkgit:git-gui[1]. "75" is the default.