From 2e4e29ad73174757632be34fb0d0c11377e3e803 Mon Sep 17 00:00:00 2001
From: Simon Lamon <simonlamon93@hotmail.com>
Date: Wed, 22 Sep 2021 08:47:36 +0000
Subject: [PATCH] Support strikethrough in serialize addon

---
 addons/xterm-addon-serialize/src/SerializeAddon.ts |  6 ++++--
 typings/xterm-headless.d.ts                        | 12 +++++++-----
 typings/xterm.d.ts                                 | 10 ++++++----
 3 files changed, 17 insertions(+), 11 deletions(-)

diff --git a/addons/xterm-addon-serialize/src/SerializeAddon.ts b/addons/xterm-addon-serialize/src/SerializeAddon.ts
index a54b4325..41195a7e 100644
--- a/addons/xterm-addon-serialize/src/SerializeAddon.ts
+++ b/addons/xterm-addon-serialize/src/SerializeAddon.ts
@@ -72,7 +72,8 @@ function equalFlags(cell1: IBufferCell, cell2: IBufferCell): boolean {
     && cell1.isBlink() === cell2.isBlink()
     && cell1.isInvisible() === cell2.isInvisible()
     && cell1.isItalic() === cell2.isItalic()
-    && cell1.isDim() === cell2.isDim();
+    && cell1.isDim() === cell2.isDim()
+    && cell1.isStrikethrough() === cell2.isStrikethrough();
 }
 
 class StringSerializeHandler extends BaseSerializeHandler {
@@ -160,7 +161,7 @@ class StringSerializeHandler extends BaseSerializeHandler {
         if (
           // you must output character to cause overflow, control sequence can't do this
           nextRowFirstChar.getChars() &&
-          isNextRowFirstCharDoubleWidth ? this._nullCellCount <= 1 : this._nullCellCount <= 0
+            isNextRowFirstCharDoubleWidth ? this._nullCellCount <= 1 : this._nullCellCount <= 0
         ) {
           if (
             // the last character can't be null,
@@ -259,6 +260,7 @@ class StringSerializeHandler extends BaseSerializeHandler {
           if (cell.isInvisible() !== oldCell.isInvisible()) { sgrSeq.push(cell.isInvisible() ? 8 : 28); }
           if (cell.isItalic() !== oldCell.isItalic()) { sgrSeq.push(cell.isItalic() ? 3 : 23); }
           if (cell.isDim() !== oldCell.isDim()) { sgrSeq.push(cell.isDim() ? 2 : 22); }
+          if (cell.isStrikethrough() !== oldCell.isStrikethrough()) { sgrSeq.push(cell.isStrikethrough() ? 9 : 29); }
         }
       }
     }
diff --git a/typings/xterm-headless.d.ts b/typings/xterm-headless.d.ts
index 13a32126..84b715e8 100644
--- a/typings/xterm-headless.d.ts
+++ b/typings/xterm-headless.d.ts
@@ -84,7 +84,7 @@ declare module 'xterm-headless' {
      * line height and letter spacing is used. Note that this doesn't work with the DOM renderer
      * which renders all characters using the font. The default is true.
      */
-     customGlyphs?: boolean;
+    customGlyphs?: boolean;
 
     /**
      * Whether input should be disabled.
@@ -1085,18 +1085,20 @@ declare module 'xterm-headless' {
 
     /** Whether the cell has the bold attribute (CSI 1 m). */
     isBold(): number;
-    /** Whether the cell has the inverse attribute (CSI 3 m). */
+    /** Whether the cell has the italic attribute (CSI 3 m). */
     isItalic(): number;
-    /** Whether the cell has the inverse attribute (CSI 2 m). */
+    /** Whether the cell has the dim attribute (CSI 2 m). */
     isDim(): number;
     /** Whether the cell has the underline attribute (CSI 4 m). */
     isUnderline(): number;
-    /** Whether the cell has the inverse attribute (CSI 5 m). */
+    /** Whether the cell has the blink attribute (CSI 5 m). */
     isBlink(): number;
     /** Whether the cell has the inverse attribute (CSI 7 m). */
     isInverse(): number;
-    /** Whether the cell has the inverse attribute (CSI 8 m). */
+    /** Whether the cell has the invisible attribute (CSI 8 m). */
     isInvisible(): number;
+    /** Whether the cell has the strikethrough attribute (CSI 9 m). */
+    isStrikethrough(): number;
 
     /** Whether the cell is using the RGB foreground color mode. */
     isFgRGB(): boolean;
diff --git a/typings/xterm.d.ts b/typings/xterm.d.ts
index ba2be988..6cf34bf8 100644
--- a/typings/xterm.d.ts
+++ b/typings/xterm.d.ts
@@ -1444,18 +1444,20 @@ declare module 'xterm' {
 
     /** Whether the cell has the bold attribute (CSI 1 m). */
     isBold(): number;
-    /** Whether the cell has the inverse attribute (CSI 3 m). */
+    /** Whether the cell has the italic attribute (CSI 3 m). */
     isItalic(): number;
-    /** Whether the cell has the inverse attribute (CSI 2 m). */
+    /** Whether the cell has the dim attribute (CSI 2 m). */
     isDim(): number;
     /** Whether the cell has the underline attribute (CSI 4 m). */
     isUnderline(): number;
-    /** Whether the cell has the inverse attribute (CSI 5 m). */
+    /** Whether the cell has the blink attribute (CSI 5 m). */
     isBlink(): number;
     /** Whether the cell has the inverse attribute (CSI 7 m). */
     isInverse(): number;
-    /** Whether the cell has the inverse attribute (CSI 8 m). */
+    /** Whether the cell has the invisible attribute (CSI 8 m). */
     isInvisible(): number;
+    /** Whether the cell has the strikethrough attribute (CSI 9 m). */
+    isStrikethrough(): number;
 
     /** Whether the cell is using the RGB foreground color mode. */
     isFgRGB(): boolean;