From 98402911000414916f4b0cdfe9f9f1b07342b7f2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20Ekl=C3=B6f?= <daniel@ekloef.se>
Date: Sat, 16 Nov 2019 10:55:28 +0100
Subject: [PATCH] csi: implement CSI 0g and CSI 3g

* 0g - clear tab stop at current column
* 3g - clear all tab stops
---
 csi.c | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/csi.c b/csi.c
index 13a31069..c39653e1 100644
--- a/csi.c
+++ b/csi.c
@@ -357,6 +357,32 @@ csi_dispatch(struct terminal *term, uint8_t final)
             term_cursor_left(term, vt_param_get(term, 0, 1));
             break;
 
+        case 'g': {
+            int param = vt_param_get(term, 0, 0);
+            switch (param) {
+            case 0:
+                /* Clear tab stop at *current* column */
+                tll_foreach(term->tab_stops, it) {
+                    if (it->item == term->cursor.col)
+                        tll_remove(term->tab_stops, it);
+                    else if (it->item > term->cursor.col)
+                        break;
+                }
+
+                break;
+
+            case 3:
+                /* Clear *all* tabs */
+                tll_free(term->tab_stops);
+                break;
+
+            default:
+                UNHANDLED();
+                break;
+            }
+            break;
+        }
+
         case 'G': {
             /* Cursor horizontal absolute */
             struct coord new_cursor = term_cursor_rel_to_abs(