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

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

Bug-Reported-by:         D630 <[email protected]>
Bug-Reference-ID:       <[email protected]>
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_ */