On 2023/09/29 9:58, Shijie Huang wrote:
> Hi Kazu,
>
> 在 2023/9/29 8:44, HAGIO KAZUHITO(萩尾 一仁) 写道:
>> On 2023/09/21 11:00, Huang Shijie wrote:
>>> Add the clear command for crash.
>>> Use it to clear the screen.
>> Sorry, but I would not like to add a command just to do this.
>
> My final purpose is to use 'alias' to map the command to 'c':
>
> alias c clear
>
Ah, got it. External commands cannot be used as a command for alias, so
I added it exceptionally.
Lianbo, is this OK?
Sorry for the late reply.
This seems acceptable. But I just have one question, please see the comment below.
From c9dc09e9c3e9b51664c555fd6dda71999c193ca8 Mon Sep 17 00:00:00 2001
From: Kazuhito Hagio <k-hagio-ab@nec.com>
Date: Fri, 29 Sep 2023 11:58:04 +0900
Subject: [PATCH] Make "clear" external command runnable without "!" and
alias-able
Make the "clear" external command runnable without an exclamation point
("!") for convenient. Additionally, make it acceptable as a command
string for alias exceptionally in external commands.
Signed-off-by: Kazuhito Hagio <k-hagio-ab@nec.com>
---
cmdline.c | 4 ++++
main.c | 3 ++-
2 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/cmdline.c b/cmdline.c
index b7f919ae2279..65da04cbf9a5 100644
--- a/cmdline.c
+++ b/cmdline.c
@@ -1833,6 +1833,10 @@ allocate_alias(int origin)
if (get_command_table_entry(args[2]))
found = TRUE;
+ /* Accept the "clear" external command exceptionally. */
+ if (STREQ(args[2], "clear"))
+ found = TRUE;
I added the debugging info here:
+ error(INFO, "args1->%s, args2->%s\n",args[1], args[2]);
+ /* Accept the "clear" external command exceptionally. */
+ if (STREQ(args[2], "clear"))
+ found = TRUE;
And I did not see any output information with the string "clear".
The variable 'found' won't be set to 'TRUE' unless it is initialized in the alias_init() such as the "lsmod", right?
Other changes are fine to me.
Thanks.
Lianbo
+
if (!found) {
if (!strlen(args[2])) {
if (alias_exists(args[1])) {
diff --git a/main.c b/main.c
index 0c6e5958f3ad..4fd4ca57dbb2 100644
--- a/main.c
+++ b/main.c
@@ -1043,7 +1043,8 @@ is_external_command(void)
STREQ(cmd, "more") ||
STREQ(cmd, "less") ||
STREQ(cmd, "echo") ||
- STREQ(cmd, "ls")) {
+ STREQ(cmd, "ls") ||
+ STREQ(cmd, "clear")) {
sprintf(command, "%s", cmd);
for (i = 1; i < argcnt; i++) {
strcat(command, " ");
--
2.31.1