From 69b1cef921ac66e8f792ff52ddb3a5609600a17f Mon Sep 17 00:00:00 2001
From: Denys Vlasenko <vda.linux@googlemail.com>
Date: Mon, 21 Sep 2009 10:21:44 +0200
Subject: [PATCH] hush: better wording in comments. no code changes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
---
shell/hush.c | 10 ++++++----
1 file 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 */
/* $- Option flags set by set builtin or shell options (-i etc) */
default:
o_addQchr(dest, '$');