diff options
| -rw-r--r-- | shell/hush.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/shell/hush.c b/shell/hush.c index 63b95633d..6b176c388 100644 --- a/shell/hush.c +++ b/shell/hush.c @@ -1038,7 +1038,7 @@ static void restore_G_args(save_arg_t *sv, char **argv) * is finished or backgrounded. It is the same in interactive and * non-interactive shells, and is the same regardless of whether * a user trap handler is installed or a shell special one is in effect. - * ^C or ^Z from keyboard seem to execute "at once" because it usually + * ^C or ^Z from keyboard seems to execute "at once" because it usually * backgrounds (i.e. stops) or kills all members of currently running * pipe. * @@ -1105,7 +1105,7 @@ static void restore_G_args(save_arg_t *sv, char **argv) * (child shell is not interactive), * unset all traps (note: regardless of child shell's type - {}, (), etc) * after [v]fork, if we plan to exec: - * POSIX says pending signal mask is cleared in child - no need to clear it. + * POSIX says fork clears pending signal mask in child - no need to clear it. * Restore blocked signal set to one inherited by shell just prior to exec. * * Note: as a result, we do not use signal handlers much. The only uses @@ -5673,8 +5673,10 @@ static int handle_dollar(o_string *as_string, goto make_var; } /* else: it's $_ */ - /* TODO: */ - /* $_ Shell or shell script name; or last cmd name */ + /* TODO: $_ and $-: */ + /* $_ Shell or shell script name; or last argument of last command + * (if last command wasn't a pipe; if it was, bash sets $_ to ""); + * but in command's env, set to full pathname used to invoke it */ /* $- Option flags set by set builtin or shell options (-i etc) */ default: o_addQchr(dest, '$'); |