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BASH PATCH REPORT
=================
Bash-Release: 3.2
Patch-ID: bash32-003
Bug-Reported-by: John Gatewood Ham <zappaman@buraphalinux.org>
Bug-Reference-ID: <Pine.LNX.4.64.0610121334140.15558@www.buraphalinux.org>
Bug-Reference-URL: http://lists.gnu.org/archive/html/bug-bash/2006-10/msg00045.html
Bug-Description:
When using the conditional command's `=~' operator to match regular
expressions, the parser did not skip over shell metacharacters in the
regular expression, leading to syntax errors.
Patch:
*** ../bash-3.2-patched/parse.y Tue Oct 17 11:45:20 2006
--- parse.y Sat Oct 14 14:56:16 2006
***************
*** 1029,1034 ****
--- 1029,1035 ----
#define PST_CMDTOKEN 0x1000 /* command token OK - unused */
#define PST_COMPASSIGN 0x2000 /* parsing x=(...) compound assignment */
#define PST_ASSIGNOK 0x4000 /* assignment statement ok in this context */
+ #define PST_REGEXP 0x8000 /* parsing an ERE/BRE as a single word */
/* Initial size to allocate for tokens, and the
amount to grow them by. */
***************
*** 2591,2596 ****
--- 2592,2600 ----
return (character);
}
+ if (parser_state & PST_REGEXP)
+ goto tokword;
+
/* Shell meta-characters. */
if MBTEST(shellmeta (character) && ((parser_state & PST_DBLPAREN) == 0))
{
***************
*** 2698,2703 ****
--- 2702,2708 ----
if MBTEST(character == '-' && (last_read_token == LESS_AND || last_read_token == GREATER_AND))
return (character);
+ tokword:
/* Okay, if we got this far, we have to read a word. Read one,
and then check it against the known ones. */
result = read_token_word (character);
***************
*** 3202,3209 ****
if (tok == WORD && test_binop (yylval.word->word))
op = yylval.word;
#if defined (COND_REGEXP)
! else if (tok == WORD && STREQ (yylval.word->word,"=~"))
! op = yylval.word;
#endif
else if (tok == '<' || tok == '>')
op = make_word_from_token (tok); /* ( */
--- 3207,3217 ----
if (tok == WORD && test_binop (yylval.word->word))
op = yylval.word;
#if defined (COND_REGEXP)
! else if (tok == WORD && STREQ (yylval.word->word, "=~"))
! {
! op = yylval.word;
! parser_state |= PST_REGEXP;
! }
#endif
else if (tok == '<' || tok == '>')
op = make_word_from_token (tok); /* ( */
***************
*** 3234,3239 ****
--- 3242,3248 ----
/* rhs */
tok = read_token (READ);
+ parser_state &= ~PST_REGEXP;
if (tok == WORD)
{
tright = make_cond_node (COND_TERM, yylval.word, (COND_COM *)NULL, (COND_COM *)NULL);
***************
*** 3419,3427 ****
goto next_character;
}
#ifdef EXTENDED_GLOB
/* Parse a ksh-style extended pattern matching specification. */
! if (extended_glob && PATTERN_CHAR (character))
{
peek_char = shell_getc (1);
if MBTEST(peek_char == '(') /* ) */
--- 3428,3461 ----
goto next_character;
}
+ #ifdef COND_REGEXP
+ /* When parsing a regexp as a single word inside a conditional command,
+ we need to special-case characters special to both the shell and
+ regular expressions. Right now, that is only '(' and '|'. */ /*)*/
+ if MBTEST((parser_state & PST_REGEXP) && (character == '(' || character == '|')) /*)*/
+ {
+ if (character == '|')
+ goto got_character;
+
+ push_delimiter (dstack, character);
+ ttok = parse_matched_pair (cd, '(', ')', &ttoklen, 0);
+ pop_delimiter (dstack);
+ if (ttok == &matched_pair_error)
+ return -1; /* Bail immediately. */
+ RESIZE_MALLOCED_BUFFER (token, token_index, ttoklen + 2,
+ token_buffer_size, TOKEN_DEFAULT_GROW_SIZE);
+ token[token_index++] = character;
+ strcpy (token + token_index, ttok);
+ token_index += ttoklen;
+ FREE (ttok);
+ dollar_present = all_digit_token = 0;
+ goto next_character;
+ }
+ #endif /* COND_REGEXP */
+
#ifdef EXTENDED_GLOB
/* Parse a ksh-style extended pattern matching specification. */
! if MBTEST(extended_glob && PATTERN_CHAR (character))
{
peek_char = shell_getc (1);
if MBTEST(peek_char == '(') /* ) */
*** ../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 2
#endif /* _PATCHLEVEL_H_ */
--- 26,30 ----
looks for to find the patch level (for the sccs version string). */
! #define PATCHLEVEL 3
#endif /* _PATCHLEVEL_H_ */
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