ECH handled correctly.

diff --git a/st.c b/st.c
index fcb3d65..15ff4f8 100644 (file)
--- 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);