proposed fix for locale-related problem with LINENO sed script

[Paul Eggert]

By code inspection I found that the LINENO sed script uses character
ranges like 0-9, but this is before the locale is fixed up, so the
resulting behavior is nonportable.  Here is a proposed patch.

2001-10-31  Paul Eggert  <address@hidden>

        * lib/m4sugar/m4sh.m4 (AS_SHELL_SANITIZE): _AS_CR_PREPARE
        needs to be invoked before _AS_LINENO_PREPARE.
        (_AS_LINENO_PREPARE): Use as_cr_digits and as_cr_alnum ratherh
        than character ranges.

--- m4sh.m4.~1.69.~     Wed Oct 31 11:55:34 2001
+++ m4sh.m4     Wed Oct 31 12:35:56 2001
@@ -155,9 +155,9 @@ fi
 as_me=`AS_BASENAME("$[0]")`
 
-# Rewrite early, but we need PATH_SEPARATOR.
+# Rewrite early, but we need CR and PATH_SEPARATOR.
+_AS_CR_PREPARE
 _AS_PATH_SEPARATOR_PREPARE
 _AS_LINENO_PREPARE
 
-_AS_CR_PREPARE
 _AS_ECHO_N_PREPARE
 _AS_EXPR_PREPARE
@@ -530,8 +530,8 @@ m4_define([_AS_LINENO_PREPARE],
       s,$,-,
       : loop
-      s,^\([[0-9]]*\)\(.*\)[[$]]LINENO\([[^a-zA-Z0-9_]]\),\1\2\1\3,
+      
s,^\([['$as_cr_digits']]*\)\(.*\)[[$]]LINENO\([[^'$as_cr_alnum'_]]\),\1\2\1\3,
       t loop
       s,-$,,
-      s,^[[0-9]]*\n,,
+      s,^[['$as_cr_digits']]*\n,,
     ' >$as_me.lineno &&
   chmod +x $as_me.lineno ||