[SCM] GNU Autoconf source repository branch, master, updated. v2.63-50-g6edff90

[Eric Blake]

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- Log -----------------------------------------------------------------
commit 6edff90b47fbfe7a3b503b9b453ffd374e3d0369
Author: Eric Blake <address@hidden>
Date:   Wed Oct 15 11:22:25 2008 -0600

    Cleanups to previous patches.
    
    * doc/autoconf.texi (Portable Shell): Minor edits.
    (Limitations of Builtins): Touch up wording.
    * lib/m4sugar/m4sh.m4 (AS_LINENO_PUSH): Nuke trailing whitespace.
    (_AS_SHELL_SANITIZE): Wrap comments less than 80 columns.
    
    Signed-off-by: Eric Blake <address@hidden>

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

Summary of changes:
 ChangeLog           |    8 ++++++++
 doc/autoconf.texi   |   16 +++++++++-------
 lib/m4sugar/m4sh.m4 |    9 +++++----
 3 files changed, 22 insertions(+), 11 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 9789f57..d4619b9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2008-10-15  Eric Blake  <address@hidden>
+
+       Cleanups to previous patches.
+       * doc/autoconf.texi (Portable Shell): Minor edits.
+       (Limitations of Builtins): Touch up wording.
+       * lib/m4sugar/m4sh.m4 (AS_LINENO_PUSH): Nuke trailing whitespace.
+       (_AS_SHELL_SANITIZE): Wrap comments less than 80 columns.
+
 2008-10-15  Paolo Bonzini  <address@hidden>
 
        Updates to shell portability documentation.
diff --git a/doc/autoconf.texi b/doc/autoconf.texi
index fe51667..b3ffc76 100644
--- a/doc/autoconf.texi
+++ b/doc/autoconf.texi
@@ -12794,10 +12794,11 @@ while not in Unix version 7, were retrofitted in the 
original Bourne
 shell and can be assumed to be part of the least common denominator.
 
 On the other hand, if you're using M4sh you can assume that the shell
-has the features that were added in SVR2, including shell functions,
+has the features that were added in SVR2 (circa 1984), including shell
+functions,
 @command{return}, @command{unset}, and I/O redirection for builtins.  For
 more information, refer to @uref{http://@/www.in-ulm.de/@/~mascheck/@/bourne/}.
-However, some pitfalls have to be avoided for portable use of this
+However, some pitfalls have to be avoided for portable use of these
 constructs; these will be documented in the rest of this chapter.
 See in particular @ref{Shell Functions} and @ref{Limitations of
 Builtins, , Limitations of Shell Builtins}.
@@ -14555,10 +14556,11 @@ EOF
 @end example
 
 New applications which are not aiming at portability should use
address@hidden instead of @samp{echo}.  M4sh provides the @code{AS_ECHO}
-and @code{AS_ECHO_N} macros (corresponding to @samp{echo -n} which use
address@hidden if it is available, or otherwise resort to various creative
-tricks in order to work around the above problems.
address@hidden instead of @command{echo}.  M4sh provides the
address@hidden and @code{AS_ECHO_N} macros, which choose between
address@hidden -n} on implementations where that works, @command{printf} if
+it is available, or other creative tricks in order to work around the
+above problems.
 
 
 @item @command{eval}
@@ -14799,7 +14801,7 @@ fi
 @noindent
 Or, especially if the @dfn{else} branch is short, you can use @code{||}.
 In M4sh, the @code{AS_IF} macro provides an easy way to write these kinds
-of conditionals as;
+of conditionals:
 
 @example
 AS_IF([cmp -s file file.new], [], [mv file.new file])
diff --git a/lib/m4sugar/m4sh.m4 b/lib/m4sugar/m4sh.m4
index 64cc8db..b42e87f 100644
--- a/lib/m4sugar/m4sh.m4
+++ b/lib/m4sugar/m4sh.m4
@@ -420,9 +420,10 @@ if test ! -f "$as_myself"; then
   AS_EXIT
 fi
 
-# Unset variables that we do not need and cause bugs (e.g. in pre-3.0 UWIN 
ksh).
-# But do not cause bugs in bash 2.01; the "|| exit 1" suppresses any
-# "Segmentation fault" message there.  '((' could trigger a bug in pdksh 
5.2.14.
+# Unset variables that we do not need and which cause bugs (e.g. in
+# pre-3.0 UWIN ksh).  But do not cause bugs in bash 2.01; the "|| exit 1"
+# suppresses any "Segmentation fault" message there.  '((' could
+# trigger a bug in pdksh 5.2.14.
 for as_var in BASH_ENV ENV MAIL MAILPATH
 do eval test x\${$as_var+set} = xset && dnl
  ( (unset $as_var) || exit 1) >/dev/null 2>&1 && unset $as_var || :
@@ -698,7 +699,7 @@ m4_define([AS_ERROR],
 # ------------------------
 # If this is the outermost call to AS_LINENO_PUSH, make sure that
 # AS_MESSAGE will print LINENO as the line number.
-m4_defun([AS_LINENO_PUSH], 
+m4_defun([AS_LINENO_PUSH],
 [as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack])
 
 


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