From 3c67628c57b03f6faabe61d04b13297eac80bb6a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20Ekl=C3=B6f?= <daniel@ekloef.se>
Date: Wed, 3 Jul 2019 21:18:06 +0200
Subject: [PATCH] vt: implement (untested!) smam and rmam (auto margins)

Default is auto-margins enabled (scroll when cursor reaches right
margin).
---
 csi.c  | 4 ++--
 main.c | 1 +
 vt.c   | 2 +-
 3 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/csi.c b/csi.c
index 6fca2c24..bb805134 100644
--- a/csi.c
+++ b/csi.c
@@ -585,7 +585,7 @@ csi_dispatch(struct terminal *term, uint8_t final)
                     break;
 
                 case 7:
-                    LOG_WARN("unimplemented: smam (automatic margins)");
+                    term->auto_margin = true;
                     break;
 
                 case 12:
@@ -655,7 +655,7 @@ csi_dispatch(struct terminal *term, uint8_t final)
                     break;
 
                 case 7:
-                    LOG_WARN("unimplemented: smam (automatic margins)");
+                    term->auto_margin = false;
                     break;
 
                 case 12:
diff --git a/main.c b/main.c
index b69f42de..a87598c4 100644
--- a/main.c
+++ b/main.c
@@ -864,6 +864,7 @@ main(int argc, char *const *argv)
             .ptmx = posix_openpt(O_RDWR | O_NOCTTY),
             .decckm = DECCKM_CSI,
             .keypad_mode = KEYPAD_NUMERICAL,  /* TODO: verify */
+            .auto_margin = true,
             .vt = {
                 .state = 1,  /* STATE_GROUND */
             },
diff --git a/vt.c b/vt.c
index b00b840d..8f1db921 100644
--- a/vt.c
+++ b/vt.c
@@ -690,7 +690,7 @@ action(struct terminal *term, enum action action, uint8_t c)
         break;
 
     case ACTION_PRINT: {
-        if (term->print_needs_wrap) {
+        if (term->auto_margin && term->print_needs_wrap) {
             if (term->cursor.row == term->scroll_region.end - 1) {
                 term_scroll(term, 1);
                 term_cursor_to(term, term->cursor.row, 0);