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Another hush update from Larry:

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Fixes the interaction between if/then/else/fi syntax and variables.
    I planned to do it right from the beginning, but my implementation
    was buggy.  Also adds the relevant test cases.  Also adds some old
    Matt Kraai variable test cases that got left out somehow.
This commit is contained in:
Eric Andersen
2001-06-07 16:42:05 +00:00
parent 4f3e24979b
commit 04407e522b
3 changed files with 61 additions and 28 deletions
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30
shell/hush.c
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@@ -1326,19 +1326,18 @@ static int run_pipe_real(struct pipe *pi)
* Builtins within pipes have to fork anyway, and are handled in
* pseudo_exec. "echo foo | read bar" doesn't work on bash, either.
*/
if (pi->num_progs == 1 && pi->progs[0].argv != NULL) {
child = & (pi->progs[0]);
if (child->group && ! child->subshell) {
int squirrel[] = {-1, -1, -1};
int rcode;
debug_printf("non-subshell grouping\n");
setup_redirects(child, squirrel);
/* XXX could we merge code with following builtin case,
* by creating a pseudo builtin that calls run_list_real? */
rcode = run_list_real(child->group);
restore_redirects(squirrel);
return rcode;
}
if (pi->num_progs == 1) child = & (pi->progs[0]);
if (pi->num_progs == 1 && child->group && child->subshell == 0) {
int squirrel[] = {-1, -1, -1};
int rcode;
debug_printf("non-subshell grouping\n");
setup_redirects(child, squirrel);
/* XXX could we merge code with following builtin case,
* by creating a pseudo builtin that calls run_list_real? */
rcode = run_list_real(child->group);
restore_redirects(squirrel);
return rcode;
} else if (pi->num_progs == 1 && pi->progs[0].argv != NULL) {
for (i=0; is_assignment(child->argv[i]); i++) { /* nothing */ }
if (i!=0 && child->argv[i]==NULL) {
/* assignments, but no command: set the local environment */
@@ -1352,7 +1351,8 @@ static int run_pipe_real(struct pipe *pi)
* variable. */
int export_me=0;
char *name, *value;
name = strdup(child->argv[i]);
name = xstrdup(child->argv[i]);
debug_printf("Local environment set: %s\n", name);
value = strchr(name, '=');
if (value)
*value=0;
@@ -1478,6 +1478,7 @@ static int run_list_real(struct pipe *pi)
if (rmode == RES_ELIF && !if_code) continue;
if (pi->num_progs == 0) continue;
rcode = run_pipe_real(pi);
debug_printf("run_pipe_real returned %d\n",rcode);
if (rcode!=-1) {
/* We only ran a builtin: rcode was set by the return value
* of run_pipe_real(), and we don't need to wait for anything. */
@@ -1943,6 +1944,7 @@ int reserved_word(o_string *dest, struct p_context *ctx)
debug_printf("pop stack\n");
old = ctx->stack;
old->child->group = ctx->list_head;
old->child->subshell = 0;
*ctx = *old; /* physical copy */
free(old);
}