From: DU HUANPENG <u74147@xxxxxxxxx>
currtly, the ctrl-u discards the whole line, in most linux
boxes, ctrl-u just remove character before cursor.
this patch make ctrl-u to do this.
Signed-off-by: DU HUANPENG <u74147@xxxxxxxxx>
---
lib/readline.c | 31 +++++++++++++++++++++++++++++--
1 file changed, 29 insertions(+), 2 deletions(-)
diff --git a/lib/readline.c b/lib/readline.c
index d026af1..eba3da4 100644
--- a/lib/readline.c
+++ b/lib/readline.c
@@ -291,8 +291,35 @@ int readline(const char *prompt, char *buf, int len)
break;
case BB_KEY_ERASE_LINE:
case CTL_CH('u'):
- BEGINNING_OF_LINE();
- ERASE_TO_EOL();
+ if(num >= eol_num) {
+ BEGINNING_OF_LINE();
+ ERASE_TO_EOL();
+ } else {
+ for(i=num; i<eol_num; i++) {
+ buf[i-num] = buf[i];
+ }
+ buf[i] = '\0';
+
+ for(i=0; i<num; i++) {
+ putchar(CTL_BACKSPACE);
+ }
+ for(i=0; i<eol_num; i++) {
+ putchar(' ');
+ }
+ for(i=0; i<eol_num; i++) {
+ putchar(CTL_BACKSPACE);
+ }
+
+ eol_num -= num;
+ num = 0;
+
+ for(i=0; i<eol_num; i++) {
+ putchar(buf[i]);
+ }
+ for(i=0; i<eol_num; i++) {
+ putchar(CTL_BACKSPACE);
+ }
+ }
break;
case DEL:
case BB_KEY_DEL7:
--
2.7.4
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