shell命令行增加回退支持

Signed-off-by: fangye <fangye@talkweb.com.cn>
2022-01-23 19:10:43 +08:00
parent e133ce6865
commit d986648e9c
1 changed files with 5 additions and 0 deletions
--- a/components/shell/src/base/shmsg.c
+++ b/components/shell/src/base/shmsg.c
@@ -216,6 +216,11 @@ VOID ShellTaskEntry(VOID)
                ptr = buf;
                break;
            }
+            if (*ptr == '\b' && ptr != buf) { /* support backspace */
+                PRINTK("\b \b");
+                ptr--;
+                break;
+            }
            if (!VISIABLE_CHAR(*ptr)) {
                break;
            }