diff options
| -rw-r--r-- | shell/Config.in | 5 | ||||
| -rw-r--r-- | shell/hush.c | 14 | ||||
| -rw-r--r-- | shell/hush_test/hush-bugs/tick.right | 0 | ||||
| -rwxr-xr-x | shell/hush_test/hush-bugs/tick.tests | 4 |
4 files changed, 22 insertions, 1 deletions
diff --git a/shell/Config.in b/shell/Config.in index 253752bc3..99e395dfb 100644 --- a/shell/Config.in +++ b/shell/Config.in @@ -197,6 +197,11 @@ config HUSH_JOB prompting for next command (or executing next command in a script), but no separate process group is formed. +config HUSH_TICK + bool "Process substitution" + default n + help + Enable process substitution `command` and $(command) in hush. config LASH bool "lash" diff --git a/shell/hush.c b/shell/hush.c index a462090c6..9c7fc8645 100644 --- a/shell/hush.c +++ b/shell/hush.c @@ -480,7 +480,9 @@ static int done_pipe(struct p_context *ctx, pipe_style type); /* primary string parsing: */ static int redirect_dup_num(struct in_str *input); static int redirect_opt_num(o_string *o); +#if ENABLE_HUSH_TICK static int process_command_subs(o_string *dest, struct p_context *ctx, struct in_str *input, const char *subst_end); +#endif static int parse_group(o_string *dest, struct p_context *ctx, struct in_str *input, int ch); static const char *lookup_param(const char *src); static char *make_string(char **inp); @@ -3054,6 +3056,7 @@ static int redirect_opt_num(o_string *o) return num; } +#if ENABLE_HUSH_TICK static FILE *generate_stream_from_list(struct pipe *head) { FILE *pf; @@ -3131,6 +3134,7 @@ static int process_command_subs(o_string *dest, struct p_context *ctx, debug_printf("pclosed, retcode=%d\n", retcode); return retcode; } +#endif static int parse_group(o_string *dest, struct p_context *ctx, struct in_str *input, int ch) @@ -3262,10 +3266,12 @@ static int handle_dollar(o_string *dest, struct p_context *ctx, struct in_str *i } b_addchr(dest, SPECIAL_VAR_SYMBOL); break; +#if ENABLE_HUSH_TICK case '(': b_getch(input); process_command_subs(dest, ctx, input, ")"); break; +#endif case '-': case '_': /* still unhandled, but should be eventually */ @@ -3371,9 +3377,11 @@ static int parse_stream(o_string *dest, struct p_context *ctx, dest->nonnull = 1; dest->quote = !dest->quote; break; +#if ENABLE_HUSH_TICK case '`': process_command_subs(dest, ctx, input, "`"); break; +#endif case '>': redir_fd = redirect_opt_num(dest); done_word(dest, ctx); @@ -3481,9 +3489,13 @@ static void update_charmap(void) * and on most machines that would be faster (reduced L1 cache use). */ memset(charmap, CHAR_ORDINARY, sizeof(charmap)); +#if ENABLE_HUSH_TICK set_in_charmap("\\$\"`", CHAR_SPECIAL); +#else + set_in_charmap("\\$\"", CHAR_SPECIAL); +#endif set_in_charmap("<>;&|(){}#'", CHAR_ORDINARY_IF_QUOTED); - set_in_charmap(ifs, CHAR_IFS); /* also flow through if quoted */ + set_in_charmap(ifs, CHAR_IFS); /* are ordinary if quoted */ } /* most recursion does not come through here, the exception is diff --git a/shell/hush_test/hush-bugs/tick.right b/shell/hush_test/hush-bugs/tick.right new file mode 100644 index 000000000..e69de29bb --- /dev/null +++ b/shell/hush_test/hush-bugs/tick.right diff --git a/shell/hush_test/hush-bugs/tick.tests b/shell/hush_test/hush-bugs/tick.tests new file mode 100755 index 000000000..1f749a9cd --- /dev/null +++ b/shell/hush_test/hush-bugs/tick.tests @@ -0,0 +1,4 @@ +true +false; echo `echo $?` +true +{ false; echo `echo $?`; } |