* doc/diff.texi (White Space): Note that newline always ends a line,

so -w doesn't ignore newline-related changes.  Problem reported by
David Kastrup.

1 files changed, 7 insertions, 1 deletions

diff --git a/doc/diff.texi b/doc/diff.texi
index a80dd43..2a17231 100644
--- a/doc/diff.texi
+++ b/doc/diff.texi
@@ -309,7 +309,7 @@ Here lyeth muche rychnesse in lytell space. -- John Heywood   $
 The @option{-w} or @option{--ignore-all-space} option is stronger still.
 It ignores differences even if one line has white space where
 the other line has none.  @dfn{White space} characters include
-tab, newline, vertical tab, form feed, carriage return, and space;
+tab, vertical tab, form feed, carriage return, and space;
 some locales may define additional characters to be white space.
 With this option, @command{diff} considers the
 following two lines to be equivalent, where @samp{$} denotes the line
@@ -320,6 +320,12 @@ Here lyeth  muche  rychnesse in lytell space.--  John Heywood$
   He relyeth much erychnes  seinly tells pace.  --John Heywood   ^M$
 @end example
 
+For many other programs newline is also a white space character, but
+@command{diff} is a line-oriented program and a newline character
+always ends a line.  Hence the @option{-w} or
+@option{--ignore-all-space} option does not ignore newline-related
+changes; it ignores only other white space changes.
+
 @node Blank Lines
 @section Suppressing Differences Whose Lines Are All Blank
 @cindex blank line difference suppression