Readline-8.2 official patch 1

[Chet Ramey]

                           READLINE PATCH REPORT
                           =====================

Readline-Release: 8.2
Patch-ID: readline82-001

Bug-Reported-by:        Kan-Ru Chen <koster@debian.org>
Bug-Reference-ID:
Bug-Reference-URL:      
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1021109

Bug-Description:

Starting a readline application with an invalid locale specification for
LC_ALL/LANG/LC_CTYPE can cause it crash on the first call to readline.

Patch (apply with `patch -p0'):

*** ../readline-8.2-patched/nls.c       2022-08-15 09:38:51.000000000 -0400
--- nls.c       2022-10-05 09:23:22.000000000 -0400
***************
*** 142,145 ****
--- 142,149 ----
      lspec = "";
    ret = setlocale (LC_CTYPE, lspec);  /* ok, since it does not change locale 
*/
+   if (ret == 0 || *ret == 0)
+     ret = setlocale (LC_CTYPE, (char *)NULL);
+   if (ret == 0 || *ret == 0)
+     ret = RL_DEFAULT_LOCALE;
  #else
    ret = (lspec == 0 || *lspec == 0) ? RL_DEFAULT_LOCALE : lspec;

*** ../readline-8.2/patchlevel  2013-11-15 08:11:11.000000000 -0500
--- patchlevel  2014-03-21 08:28:40.000000000 -0400
***************
*** 1,3 ****
  # Do not edit -- exists only for use by patch
  
! 0
--- 1,3 ----
  # Do not edit -- exists only for use by patch
  
! 1

-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU    chet@case.edu    http://tiswww.cwru.edu/~chet/