[SCM] GNU Autoconf source repository branch, master, updated. v2.67-50-g10adce6

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- Log -----------------------------------------------------------------
commit 10adce65fefd5bbb8614b3fa890b6e68d651163a
Author: Eric Blake <[email protected]>
Date:   Tue Sep 7 15:51:47 2010 -0600

    docs: mention traditional awk limitation
    
    * doc/autoconf.texi (Limitations of Usual Tools) <awk>: Mention
    that traditional awk lacks ENVIRON.  Add reference to awk manual.
    (Particular Programs) <AC_PROG_AWK>: Add reference to awk section.
    Reported by Ralf Wildenhues.
    
    Signed-off-by: Eric Blake <[email protected]>

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

Summary of changes:
 ChangeLog         |    8 ++++++++
 doc/autoconf.texi |   10 ++++++++--
 2 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 73be221..77d513c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2010-09-08  Eric Blake  <[email protected]>
+
+	docs: mention traditional awk limitation
+	* doc/autoconf.texi (Limitations of Usual Tools) <awk>: Mention
+	that traditional awk lacks ENVIRON.  Add reference to awk manual.
+	(Particular Programs) <AC_PROG_AWK>: Add reference to awk section.
+	Reported by Ralf Wildenhues.
+
 2010-09-07  Eric Blake  <[email protected]>
 
 	docs: mention bash vs. POSIXLY_CORRECT
diff --git a/doc/autoconf.texi b/doc/autoconf.texi
index 15639d9..24c6e14 100644
--- a/doc/autoconf.texi
+++ b/doc/autoconf.texi
@@ -3915,6 +3915,9 @@ order, and set output variable @code{AWK} to the first one that is found.
 It tries @code{gawk} first because that is reported to be the
 best implementation.  The result can be overridden by setting the
 variable @code{AWK} or the cache variable @code{ac_cv_prog_AWK}.
+
+Using this macro is sufficient to avoid the pitfalls of traditional
+@command{awk} (@pxref{awk, , Limitations of Usual Tools}).
 @end defmac
 
 @defmac AC_PROG_GREP
@@ -17732,6 +17735,7 @@ include some limitations you should be aware of.
 @c This table includes things like `@command{expr} (|)', so we can't
 @c use @table @command.
 @table @asis
+@anchor{awk}
 @item @command{awk}
 @c ----------------
 @prindex @command{awk}
@@ -17828,7 +17832,8 @@ Solaris @command{/bin/awk}, have many limitations and do not
 conform to Posix.  Nowadays @code{AC_PROG_AWK} (@pxref{Particular
 Programs}) finds you an Awk that doesn't have these problems, but if
 for some reason you prefer not to use @code{AC_PROG_AWK} you may need to
-address them.
+address them.  For more detailed descriptions, see @ref{Language
+History, , @command{awk} language history, gawk, GNU Awk User's Guide}.
 
 Traditional Awk does not support multidimensional arrays or user-defined
 functions.
@@ -17845,7 +17850,8 @@ Traditional Awk does not support the expressions
 @code{@var{a}?@var{b}:@var{c}}, @code{!@var{a}}, @code{@var{a}^@var{b}},
 or @code{@var{a}^=@var{b}}.
 
-Traditional Awk does not support the predefined @code{CONVFMT} variable.
+Traditional Awk does not support the predefined @code{CONVFMT} or
+@code{ENVIRON} variables.
 
 Traditional Awk supports only the predefined functions @code{exp}, @code{index},
 @code{int}, @code{length}, @code{log}, @code{split}, @code{sprintf},


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