From: Michal Sojka <sojkam1@fel.cvut.cz>
Date: Wed, 30 Mar 2016 12:21:17 +0000 (+0200)
Subject: cmdproc: Make backspace work even in sterm
X-Git-Url: https://rtime.felk.cvut.cz/gitweb/sysless.git/commitdiff_plain

cmdproc: Make backspace work even in sterm

sterm sends chr(127) instead of backspace.
---

diff --git a/libs4c/cmdproc/cmd_io_line.c b/libs4c/cmdproc/cmd_io_line.c
index 7ad0ec8..3bcca49 100644
--- a/libs4c/cmdproc/cmd_io_line.c
+++ b/libs4c/cmdproc/cmd_io_line.c
@@ -41,7 +41,7 @@ int cmd_ed_line_buf(ed_line_buf_t *elb, int ch)
   if(!lastch){
     elb->inbuf=0;               /* Start new line */
   }
-  if(ch == '\b') {		/* backspace */
+  if(ch == '\b' || ch == 127) {		/* backspace, del (sometimes backspace = 127) */
     if (elb->inbuf > 0)
       elb->inbuf--;
     return 0;
@@ -200,8 +200,10 @@ int cmd_io_line_in(cmd_io_t *cmd_io)
     else
       if(el->flg&FL_ELB_ECHO) {
         while(cmd_io_putc(io_stack,ch)<0);
-	if (ch == '\b')
-	  cmd_io_puts(io_stack, "\033[K"); /* Erase End of Line */
+        if (ch == 127)
+		  while(cmd_io_putc(io_stack,'\b')<0);
+		if (ch == '\b' || ch == 127)
+		  cmd_io_puts(io_stack, "\033[K"); /* Erase End of Line */
       }
   }
   return 0;