st

fork of suckless's simple terminal
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commit 950ff21e17af487b205ea0b666be015790114fa7
parent 5d39afc9023bc9a692ba6faf590abf9397a890ae
Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
Date:   Thu,  8 Nov 2012 17:15:26 +0100

Fix bug restoring cursor position

Sequences like DECSC, DECRC, ESC [?1047l or ESC [?1047h save and restore
cursor attributes, than taken from vt100 manual are:

       Save Cursor (DECSC) ESC   7
       ===========================
       Saves the following in terminal memory.

      - cursor position
      - graphic rendition
      - character set shift state
      - state of wrap flag
      - state of origin mode

      Restore Cursor (DECRC) ESC 8
      ===========================
      Restores the states described for (DECSC) above. If none of these
      characteristics were saved, the cursor moves to home position; origin
      mode is reset; no character attributes are assigned; and the default
      character set mapping is established.

This implies that hide attribute of the cursor should not be saved/restored
in these sequences. The best way to fix this problem is moving hide
attribute into the terminal mode, instead of having it in the cursor state.
---
 st.c |   12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)
Diffstat:
Mst.c | 12++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/st.c b/st.c
@@ -96,8 +96,7 @@ enum cursor_movement {
 
 enum cursor_state {
     CURSOR_DEFAULT  = 0,
-    CURSOR_HIDE     = 1,
-    CURSOR_WRAPNEXT = 2
+    CURSOR_WRAPNEXT = 1,
 };
 
 enum glyph_state {
@@ -115,7 +114,8 @@ enum term_mode {
     MODE_MOUSEMOTION = 64,
     MODE_MOUSE       = 32|64,
     MODE_REVERSE     = 128,
-    MODE_KBDLOCK     = 256
+    MODE_KBDLOCK     = 256,
+    MODE_HIDE      = 512
 };
 
 enum escape_state {
@@ -1464,8 +1464,8 @@ tsetmode(bool priv, bool set, int *args, int narg) {
             case 0:  /* Error (IGNORED) */
             case 12: /* att610 -- Start blinking cursor (IGNORED) */
                 break;
-            case 25:
-                MODBIT(term.c.state, !set, CURSOR_HIDE);
+            case 25: /* DECTCEM -- Text Cursor Enable Mode */
+                MODBIT(term.mode, !set, MODE_HIDE);
                 break;
             case 1000: /* 1000,1002: enable xterm mouse report */
                 MODBIT(term.mode, set, MODE_MOUSEBTN);
@@ -2505,7 +2505,7 @@ xdrawcursor(void) {
     }
 
     /* draw the new one */
-    if(!(term.c.state & CURSOR_HIDE)) {
+    if(!(IS_SET(MODE_HIDE))) {
         if(!(xw.state & WIN_FOCUSED))
             g.bg = defaultucs;