feat: capability list to enable greater flexibility of devices

[lunaix-os.git] / lunaix-os / hal / term / lcntls / lcntl.c

diff --git a/lunaix-os/hal/term/lcntls/lcntl.c b/lunaix-os/hal/term/lcntls/lcntl.c
index fdaf244275811feb83a4e5b876cefa199b72602f..08023183ecab1f637d704e7d66e09a62662367c2 100644 (file)
--- a/lunaix-os/hal/term/lcntls/lcntl.c
+++ b/lunaix-os/hal/term/lcntls/lcntl.c
@@ -80,17 +80,17 @@ lcntl_transform_seq(struct term* tdev, struct linebuffer* lbuf, bool out)
             }
         }
 
+        if (out) {
+            goto do_out;
+        }
+
         if (c == '\n') {
             latest_eol = cooked->ptr + 1;
-            if (!out && (_lf & _ECHONL)) {
+            if ((_lf & _ECHONL)) {
                 rbuffer_put(output, c);
             }
         }
 
-        if (out) {
-            goto do_out;
-        }
-
         // For input procesing
 
         if (c == '\n' || c == EOL) {
@@ -107,7 +107,8 @@ lcntl_transform_seq(struct term* tdev, struct linebuffer* lbuf, bool out)
         } else if (c == SUSP) {
             raise_sig(tdev, lbuf, SIGSTOP);
         } else if (c == ERASE) {
-            rbuffer_erase(cooked);
+            if (!rbuffer_erase(cooked))
+                continue;
         } else if (c == KILL) {
             // TODO shrink the rbuffer
         } else {
@@ -146,7 +147,7 @@ lcntl_transform_seq(struct term* tdev, struct linebuffer* lbuf, bool out)
         }
     }
 
-    if (!rbuffer_empty(output) && !(_lf & _NOFLSH)) {
+    if (!out && !rbuffer_empty(output) && !(_lf & _NOFLSH)) {
         term_flush(tdev);
     }