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BASH PATCH REPORT
=================
Bash-Release: 3.2
Patch-ID: bash32-039
Bug-Reported-by: rew@erebor.com
Bug-Reference-ID: <20070119065603.546D011E9C@kansas.erebor.com>
Bug-Reference-URL:
Bug-Description:
Bash-3.2 changed the behavior of the [[ command's `=~' operator when the
right-hand side was quoted: it matched the quoted portions as strings.
This patch introduces a new shell option: compat31. When enabled, it
restores the bash-3.1 behavior with respect to evaluating quoted arguments
to the =~ operator.
Patch:
*** ../bash-3.2-patched/execute_cmd.c 2007-12-14 21:12:39.000000000 -0500
--- execute_cmd.c 2008-02-22 21:20:40.000000000 -0500
***************
*** 2547,2551 ****
if (arg1 == 0)
arg1 = nullstr;
! arg2 = cond_expand_word (cond->right->op, rmatch ? 2 : (patmatch ? 1 : 0));
if (arg2 == 0)
arg2 = nullstr;
--- 2552,2557 ----
if (arg1 == 0)
arg1 = nullstr;
! arg2 = cond_expand_word (cond->right->op,
! (rmatch && shell_compatibility_level > 31) ? 2 : (patmatch ? 1 : 0));
if (arg2 == 0)
arg2 = nullstr;
*** ../bash-3.2-patched/shell.h 2003-06-01 15:04:36.000000000 -0400
--- shell.h 2008-02-22 21:16:48.000000000 -0500
***************
*** 90,93 ****
--- 90,94 ----
extern int interactive, interactive_shell;
extern int startup_state;
+ extern int shell_compatibility_level;
/* Structure to pass around that holds a bitmap of file descriptors
*** ../bash-3.2-patched/version.c 2007-12-14 21:12:29.000000000 -0500
--- version.c 2008-04-10 08:22:22.000000000 -0400
***************
*** 44,47 ****
--- 44,50 ----
const char *sccs_version = SCCSVERSION;
+ /* If == 31, shell compatible with bash-3.1, == 32 with bash-3.2, and so on */
+ int shell_compatibility_level = 32;
+
/* Functions for getting, setting, and displaying the shell version. */
*** ../bash-3.2-patched/builtins/shopt.def 2005-02-19 17:25:03.000000000 -0500
--- builtins/shopt.def 2008-04-10 08:13:32.000000000 -0400
***************
*** 102,105 ****
--- 102,107 ----
static int set_shellopts_after_change __P((int));
+ static int set_compatibility_level __P((int));
+
#if defined (RESTRICTED_SHELL)
static int set_restricted_shell __P((int));
***************
*** 107,110 ****
--- 109,113 ----
static int shopt_login_shell;
+ static int shopt_compat31;
typedef int shopt_set_func_t __P((int));
***************
*** 122,125 ****
--- 125,129 ----
{ "cmdhist", &command_oriented_history, (shopt_set_func_t *)NULL },
#endif
+ { "compat31", &shopt_compat31, set_compatibility_level },
{ "dotglob", &glob_dot_filenames, (shopt_set_func_t *)NULL },
{ "execfail", &no_exit_on_failed_exec, (shopt_set_func_t *)NULL },
***************
*** 460,463 ****
--- 464,479 ----
}
+ static int
+ set_compatibility_level (mode)
+ int mode;
+ {
+ /* Need to change logic here as we add more compatibility levels */
+ if (shopt_compat31)
+ shell_compatibility_level = 31;
+ else
+ shell_compatibility_level = 32;
+ return 0;
+ }
+
#if defined (RESTRICTED_SHELL)
/* Don't allow the value of restricted_shell to be modified. */
*** ../bash-3.2-patched/doc/bash.1 2006-09-28 10:26:05.000000000 -0400
--- doc/bash.1 2008-04-25 12:32:49.000000000 -0400
***************
*** 7978,7981 ****
--- 8200,8209 ----
easy re-editing of multi-line commands.
.TP 8
+ .B compat31
+ If set,
+ .B bash
+ changes its behavior to that of version 3.1 with respect to quoted
+ arguments to the conditional command's =~ operator.
+ .TP 8
.B dotglob
If set,
*** ../bash-20080214/doc/bashref.texi 2008-02-08 21:28:35.000000000 -0500
--- doc/bashref.texi 2008-02-22 21:44:51.000000000 -0500
***************
*** 4053,4056 ****
--- 4061,4069 ----
easy re-editing of multi-line commands.
+ @item compat31
+ If set, Bash
+ changes its behavior to that of version 3.1 with respect to quoted
+ arguments to the conditional command's =~ operator.
+
@item dotglob
If set, Bash includes filenames beginning with a `.' in
*** ../bash-3.2-patched/tests/shopt.right 2005-02-19 17:46:09.000000000 -0500
--- tests/shopt.right 2008-04-28 09:13:07.000000000 -0400
***************
*** 7,10 ****
--- 7,11 ----
shopt -u checkwinsize
shopt -s cmdhist
+ shopt -u compat31
shopt -u dotglob
shopt -u execfail
***************
*** 54,57 ****
--- 55,59 ----
shopt -u checkhash
shopt -u checkwinsize
+ shopt -u compat31
shopt -u dotglob
shopt -u execfail
***************
*** 78,81 ****
--- 80,84 ----
checkhash off
checkwinsize off
+ compat31 off
dotglob off
execfail off
*** ../bash-3.2/patchlevel.h Thu Apr 13 08:31:04 2006
--- patchlevel.h Mon Oct 16 14:22:54 2006
***************
*** 26,30 ****
looks for to find the patch level (for the sccs version string). */
! #define PATCHLEVEL 38
#endif /* _PATCHLEVEL_H_ */
--- 26,30 ----
looks for to find the patch level (for the sccs version string). */
! #define PATCHLEVEL 39
#endif /* _PATCHLEVEL_H_ */
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