Bash-5.2 official patch 3

[Chet Ramey]

                             BASH PATCH REPORT
                             =================

Bash-Release:   5.2
Patch-ID:       bash52-003

Bug-Reported-by:         D630 <d630@posteo.net>
Bug-Reference-ID:       <cf8523d58ac75b9ffba9519faa175618@posteo.de>
Bug-Reference-URL:      
https://lists.gnu.org/archive/html/bug-bash/2022-10/msg00092.html

Bug-Description:

Command substitutions need to preserve newlines instead of replacing them
with semicolons, especially in the presence of multiple here-documents.

Patch (apply with `patch -p0'):

*** ../bash-5.2-patched/print_cmd.c     2022-07-26 09:16:39.000000000 -0400
--- print_cmd.c 2022-10-17 10:41:06.000000000 -0400
***************
*** 298,305 ****
--- 298,307 ----
              {
                char c = command->value.Connection->connector;
+               int was_newline;
  
                s[0] = printing_comsub ? c : ';';
                s[1] = '\0';
  
+               was_newline = deferred_heredocs == 0 && was_heredoc == 0 && c 
== '\n';
                if (deferred_heredocs == 0)
                  {
***************
*** 315,318 ****
--- 317,322 ----
                if (inside_function_def)
                  cprintf ("\n");
+               else if (printing_comsub && c == '\n' && was_newline == 0)
+                 cprintf ("\n");       /* preserve newlines in comsubs but 
don't double them */
                else
                  {
***************
*** 1366,1370 ****
      }
    else
!     newline ("}");
  
    dispose_command (cmdcopy);
--- 1371,1379 ----
      }
    else
!     {
!       /* { */
!       newline ("}");
!       was_heredoc = 0;                /* not printing any here-documents now 
*/
!     }
  
    dispose_command (cmdcopy);
***************
*** 1443,1447 ****
      }
    else
!     newline ("}");
  
    result = the_printed_command;
--- 1452,1459 ----
      }
    else
!     { /* { */
!       newline ("}");
!       was_heredoc = 0;
!     }
  
    result = the_printed_command;
*** ../bash-5.2/patchlevel.h    2020-06-22 14:51:03.000000000 -0400
--- patchlevel.h        2020-10-01 11:01:28.000000000 -0400
***************
*** 26,30 ****
     looks for to find the patch level (for the sccs version string). */
  
! #define PATCHLEVEL 2
  
  #endif /* _PATCHLEVEL_H_ */
--- 26,30 ----
     looks for to find the patch level (for the sccs version string). */
  
! #define PATCHLEVEL 3
  
  #endif /* _PATCHLEVEL_H_ */

-- 
``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/