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Mon Mar 10 23:47:02 1997 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>

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* job.c (construct_command_argv_internal): Don't discard an
	explicit empty argument at the end of the command line.  In the
	slow case return immediately if the command line was empty.
This commit is contained in:
Roland McGrath 1997-03-12 21:17:08 +00:00
parent 30c9fcfec3
commit d78f2db327
1 changed files with 12 additions and 4 deletions
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16
job.c
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@ -1682,7 +1682,7 @@ construct_command_argv_internal (line, restp, shell, ifs)
register char *p;
register char *ap;
char *end;
int instring, word_has_equals, seen_nonequals;
int instring, word_has_equals, seen_nonequals, last_argument_was_empty;
char **new_argv = 0;
#ifdef WIN32
int slow_flag = 0;
@ -1741,7 +1741,7 @@ construct_command_argv_internal (line, restp, shell, ifs)
/* I is how many complete arguments have been found. */
i = 0;
instring = word_has_equals = seen_nonequals = 0;
instring = word_has_equals = seen_nonequals = last_argument_was_empty = 0;
for (p = line; *p != '\0'; ++p)
{
if (ap > end)
@ -1753,7 +1753,11 @@ construct_command_argv_internal (line, restp, shell, ifs)
/* Inside a string, just copy any char except a closing quote
or a backslash-newline combination. */
if (*p == instring)
instring = 0;
{
instring = 0;
if (*ap == '\0')
last_argument_was_empty = 1;
}
else if (*p == '\\' && p[1] == '\n')
goto swallow_escaped_newline;
else if (*p == '\n' && restp != NULL)
@ -1846,6 +1850,7 @@ construct_command_argv_internal (line, restp, shell, ifs)
Terminate the text of the argument. */
*ap++ = '\0';
new_argv[++i] = ap;
last_argument_was_empty = 0;
/* Update SEEN_NONEQUALS, which tells us if every word
heretofore has contained an `='. */
@ -1887,7 +1892,7 @@ construct_command_argv_internal (line, restp, shell, ifs)
/* Terminate the last argument and the argument list. */
*ap = '\0';
if (new_argv[i][0] != '\0')
if (new_argv[i][0] != '\0' || last_argument_was_empty)
++i;
new_argv[i] = 0;
@ -2053,6 +2058,9 @@ construct_command_argv_internal (line, restp, shell, ifs)
*ap++ = '\\';
*ap++ = *p;
}
if (ap == new_line + shell_len + sizeof (minus_c) - 1)
/* Line was empty. */
return 0;
*ap = '\0';
new_argv = construct_command_argv_internal (new_line, (char **) NULL,