Commit e5136377 authored by Glenn Morris's avatar Glenn Morris

(Old Revisions): Improve previous change.

parent 920ab46c
2008-12-06 Glenn Morris <rgm@gnu.org>
* maintaining.texi (Old Revisions): Improve previous change.
2008-12-05 Richard M Stallman <rms@gnu.org>
* anti.texi (Antinews): Minor fixes.
......
@c This is part of the Emacs manual.
@c Copyright (C) 1985, 1986, 1987, 1993, 1994, 1995, 1997, 1999, 2000,
@c 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
@c 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
@c Free Software Foundation, Inc.
@c See file emacs.texi for copying conditions.
@node Maintaining, Abbrevs, Building, Top
@chapter Maintaining Large Programs
......@@ -713,9 +714,11 @@ value of @code{vc-@var{backend}-diff-switches}, @code{vc-diff-switches},
and @code{diff-switches} (@pxref{Comparing Files}), in that order.
Since @code{nil} means to check the next variable in the sequence,
either of the first two may use the value @code{t} to mean no switches at all.
The @samp{vc@dots{}diff-switches} variables are all either @code{nil}
or @code{t} (for those version control systems that do not accept common
@code{diff} options) by default.
Most of the @samp{vc@dots{}diff-switches} variables default to
@code{nil}, but some default to @code{t}. These are for those version
control systems (e.g. SVN) whose @code{diff} implementations do not
accept common options (e.g. @samp{-c}) likely to be in
@code{diff-switches}.
The buffer produced by @kbd{C-x v =} supports the commands of
Compilation mode (@pxref{Compilation Mode}), such as @kbd{C-x `} and
......
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