ECH handled correctly.

1 files changed, 22 insertions, 5 deletions

diff --git a/st.c b/st.c
index fcb3d65..15ff4f8 100644
--- a/st.c
+++ b/st.c
@@ -692,13 +692,24 @@ csihandle(void) {
                         default:
                                 goto unknown;
                         }
-                } else goto unknown;
+                } else {
+                        switch(escseq.arg[0]) {
+                        case 4:
+                                term.mode &= ~MODE_INSERT;
+                                break;
+                        default:
+                                goto unknown;
+                        }
+                }
                 break;
         case 'M': /* DL -- Delete <n> lines */
                 DEFAULT(escseq.arg[0], 1);
                 tdeleteline(escseq.arg[0]);
                 break;
-        case 'X': /* ECH -- Erase <n> char XXX: same? */
+        case 'X': /* ECH -- Erase <n> char */
+                DEFAULT(escseq.arg[0], 1);
+                tclearregion(term.c.x, term.c.y, term.c.x + escseq.arg[0], term.c.y);
+                break;
         case 'P': /* DCH -- Delete <n> char */
                 DEFAULT(escseq.arg[0], 1);
                 tdeletechar(escseq.arg[0]);
@@ -727,10 +738,16 @@ csihandle(void) {
                                 tcursor(CURSOR_SAVE);
                                 tclearregion(0, 0, term.col-1, term.row-1);
                                 break;
-                        default:
-                                goto unknown;
+                        default: goto unknown;
+                        }
+                } else {
+                        switch(escseq.arg[0]) {
+                        case 4:
+                                term.mode |= MODE_INSERT;
+                                break;
+                        default: goto unknown;
                         }
-                } else goto unknown;
+                };
                 break;
         case 'm': /* SGR -- Terminal attribute (color) */
                 tsetattr(escseq.arg, escseq.narg);