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util/readline: Add C-u shortcut

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Add support for the unix-line-discard readline action, which erases from
the cursor position up to the beginning of the line. The default
binding, C-u, was chosen.

This is useful to quickly erase command input while working on the
monitor interface.

Signed-off-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-ID: <6772067e1c0d4b1c5310e5446e9e3e1c6b3b5bc0.1718265822.git.manos.pitsidianakis@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
This commit is contained in:
Manos Pitsidianakis 2024-06-13 11:06:13 +03:00 committed by Philippe Mathieu-Daudé
parent 96c99e3831
commit e1e55d346a
1 changed files with 12 additions and 0 deletions
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12
util/readline.c
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@ -271,6 +271,14 @@ static void readline_hist_add(ReadLineState *rs, const char *cmdline)
rs->hist_entry = -1;
}
static void readline_kill_line(ReadLineState *rs)
{
while (rs->cmd_buf_index > 0) {
readline_backward_char(rs);
readline_delete_char(rs);
}
}
/* completion support */
void readline_add_completion(ReadLineState *rs, const char *str)
@ -426,6 +434,10 @@ void readline_handle_byte(ReadLineState *rs, int ch)
/* ^P Prev line in history */
readline_up_char(rs);
break;
case 21:
/* ^U Kill backward from point to the beginning of the line. */
readline_kill_line(rs);
break;
case 23:
/* ^W */
readline_backword(rs);