[19_4] 英文文档中支持中文内容正确断行 (#2362)

Author: da-liii

TeXmacs/tests/tmu/19_4.tmu

@@ -0,0 +1,35 @@
+<TMU|<tuple|1.0.1|2.1.2>>
+
+<style|<tuple|tmdoc|british>>
+
+<\body>
+  <tmdoc-title|Line break for Chinese Text in English Document>
+
+  <section|Bug Metadata>
+
+  <\itemize>
+    <item>Reporter: 杨勇
+
+    <item>Mogan Editor Version: v1.1.1
+
+    <item>Fixed in Mogan Editor v1.1.2
+
+    <item>Issue: <slink|https://gitee.com/XmacsLabs/mogan/issues/I60WEJ>
+  </itemize>
+
+  <section|Description>
+
+  我能吞下玻璃而不伤身体。我能吞下玻璃而不伤身体。我能吞下玻璃而不伤身体。我能吞下玻璃而不伤身体。我能吞下玻璃而不伤身体。
+
+  In Mogan v1.1.1, the above line does not wrap!
+
+  <tmdoc-copyright|2022|杨勇|Darcy Shen>
+
+  <tmdoc-license|Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.1 or any later version published by the Free Software Foundation; with no Invariant Sections, with no Front-Cover Texts, and with no Back-Cover Texts. A copy of the license is included in the section entitled "GNU Free Documentation License".>
+</body>
+
+<\initial>
+  <\collection>
+    <associate|preamble|false>
+  </collection>
+</initial>

devel/19_4.md

@@ -0,0 +1,7 @@
+# 19_4
+## 如何测试
+1. 打开`TeXmacs/tests/tmu/19_4.tmu`，里面的中文内容能够正常换行
+2. 打开`TeXmacs/tests/tmu/204_24.tmu`，将文档语言切换成英文之后，排版仍旧正确
+   + 老版本的异常行为：在标点符号后面会有很大的空白
+
+## 2025/12/26 英文文档中支持中文内容正确断行

src/System/Language/text_language.cpp

@@ -88,13 +88,20 @@ text_language_rep::advance (tree t, int& pos) {
     return &tp_normal_rep;
   }
 
-  if (s[pos] == '<') {
+  if (s[pos] == '<' && !test (s, pos, "<#")) {
     while ((pos < N (s)) && (s[pos] != '>'))
       pos++;
     if (pos < N (s)) pos++;
     return &tp_normal_rep;
   }
 
+  if (s[pos] == '<' && test (s, pos, "<#")) {
+    int start= pos;
+    tm_char_forwards (s, pos);
+    string c= s (start, pos);
+    return &tp_cjk_normal_rep;
+  }
+
   pos++;
   return &tp_normal_rep;
 }