[SCM] GNU Autoconf source repository branch, master, updated. v2.65-14-g3fbac86

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- Log -----------------------------------------------------------------
commit 3fbac862d74fcae50f2e49ac2298a856a441742c
Author: Eric Blake <[email protected]>
Date:   Sat Dec 12 07:03:46 2009 -0700

    Improve wording about m4 quote characters.
    
    * doc/autoconf.texi (Autoconf Language): Autoconf quote characters
    come from m4sugar, not raw m4.
    (Active Characters): Mention that it is m4sugar which changes
    quotes from `' to [].
    * THANKS: Update.
    Suggested by Josef Vukovic.
    
    Signed-off-by: Eric Blake <[email protected]>

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog         |   10 ++++++++++
 THANKS            |    1 +
 doc/autoconf.texi |    9 ++++++---
 3 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 528ff2b..205c535 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,13 @@
+2009-12-12  Eric Blake  <[email protected]>
+
+	Improve wording about m4 quote characters.
+	* doc/autoconf.texi (Autoconf Language): Autoconf quote characters
+	come from m4sugar, not raw m4.
+	(Active Characters): Mention that it is m4sugar which changes
+	quotes from `' to [].
+	* THANKS: Update.
+	Suggested by Josef Vukovic.
+
 2009-12-12  Ralf Wildenhues  <[email protected]>
 
 	Revert "Improve AC_CONFIG_AUX_DIRS a bit." to fix shtool usage.
diff --git a/THANKS b/THANKS
index 623a297..a7afaf1 100644
--- a/THANKS
+++ b/THANKS
@@ -193,6 +193,7 @@ John R. Cary                [email protected]
 John W. Eaton               [email protected]
 Jonathan Kamens             [email protected]
 Josef Tran                  [email protected]
+Josef Vukovic               [email protected]
 Joseph S. Myers             [email protected]
 Jules Colding               [email protected]
 Julian Onions               [email protected]
diff --git a/doc/autoconf.texi b/doc/autoconf.texi
index 3144610..76bb279 100644
--- a/doc/autoconf.texi
+++ b/doc/autoconf.texi
@@ -1133,12 +1133,13 @@ quotation.
 
 When calling macros that take arguments, there must not be any white
 space between the macro name and the open parenthesis.  Arguments should
-be enclosed within the M4 quote characters @samp{[} and @samp{]}, and be
+be enclosed within the quote characters @samp{[} and @samp{]}, and be
 separated by commas.  Any leading blanks or newlines in arguments are ignored,
 unless they are quoted.  You should always quote an argument that
 might contain a macro name, comma, parenthesis, or a leading blank or
 newline.  This rule applies recursively for every macro
-call, including macros called from other macros.
+call, including macros called from other macros.  For more details on
+quoting rules, see @ref{Programming in M4}.
 
 For instance:
 
@@ -9864,7 +9865,9 @@ former helps one to follow the latter.
 To fully understand where proper quotation is important, you first need
 to know what the special characters are in Autoconf: @samp{#} introduces
 a comment inside which no macro expansion is performed, @samp{,}
-separates arguments, @samp{[} and @samp{]} are the quotes themselves,
+separates arguments, @samp{[} and @samp{]} are the quotes
+themselves@footnote{By itself, M4 uses @samp{`} and @samp{'}; it is the
+M4sugar layer that sets up the preferred quotes of @samp{[} and @samp{]}.},
 @samp{(} and @samp{)} (which M4 tries to match by pairs), and finally
 @samp{$} inside a macro definition.
 


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