Microsoft/monaco-editor

C++ line continuation mark (\) should be ignored everywhere

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#1,184 建立於 2018年11月14日

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描述

monaco-editor version: 0.15.1 Browser: Chrome (maybe others) OS: Windows

In C/C++ \ is used as line continuation mark so defining macros in multi-line is possible:

#define MACRO do { \
} while(false);

It is also possible to change a single line comment to multi-line with \:

// Multi \
   Line \
   Comment

As you see in above snippet, Github syntax highlighter accept this syntax in comments and colorize line 2 and 3 as comments, but Monaco does not:

image

This is somehow strange that the VSCode highlights it correctly but Monaco does not. image

貢獻者指南

技術棧
cpptypescript
領域
frontend
議題類型
bug
難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。
3
預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。
1-2 days
活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。
stale
清晰度議題是否清楚說明預期改動、驗收標準和下一步。
clear
前置要求
TextMate grammar basicsMonaco editor tokenization
新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。
45
研究方向
The issue is that C++ line continuation backslash is not ignored in comments and strings. The fix likely requires modifying the C++ TextMate grammar file used by Monaco (e.g., `src/basic languages/cpp/cpp.tmLanguage.ts`). The grammar needs to handle the backslash as a line continuation character in macros and single line comments. Look at how VSCode handles it (since VSCode uses Monaco but has correct behavior) and port that logic. The change is localized to the grammar definition.