Autocomplete 崇高文本2：试图摆脱美元符号

我试图在Sublime中定义一个键绑定，使其自动播放美元符号“$”，与自动播放以下符号的方式相同：

• "
• (
• [
• {
• "

我打开了默认的keymap文件并添加了以下代码：

// Auto-pair dollar signs
{ "keys": ["\$"], "command": "insert_snippet", "args": {"contents": "\$$0\$"}, "context":
    [
        { "key": "setting.auto_match_enabled", "operator": "equal", "operand": true },
        { "key": "selection_empty", "operator": "equal", "operand": true, "match_all": true },
        { "key": "following_text", "operator": "regex_contains", "operand": "^(?:\t| |\\)|]|\\}|>|$)", "match_all": true },
        { "key": "preceding_text", "operator": "not_regex_contains", "operand": "[\$a-zA-Z0-9_]$", "match_all": true },
        { "key": "eol_selector", "operator": "not_equal", "operand": "string.quoted.double", "match_all": true }
    ]
},
{ "keys": ["\$"], "command": "insert_snippet", "args": {"contents": "\$${0:$SELECTION}\$"}, "context":
    [
        { "key": "setting.auto_match_enabled", "operator": "equal", "operand": true },
        { "key": "selection_empty", "operator": "equal", "operand": false, "match_all": true }
    ]
},
{ "keys": ["\$"], "command": "move", "args": {"by": "characters", "forward": true}, "context":
    [
        { "key": "setting.auto_match_enabled", "operator": "equal", "operand": true },
        { "key": "selection_empty", "operator": "equal", "operand": true, "match_all": true },
        { "key": "following_text", "operator": "regex_contains", "operand": "^\$", "match_all": true }
    ]
},
{ "keys": ["backspace"], "command": "run_macro_file", "args": {"file": "Packages/Default/Delete Left Right.sublime-macro"}, "context":
    [
        { "key": "setting.auto_match_enabled", "operator": "equal", "operand": true },
        { "key": "selection_empty", "operator": "equal", "operand": true, "match_all": true },
        { "key": "preceding_text", "operator": "regex_contains", "operand": "\$$", "match_all": true },
        { "key": "following_text", "operator": "regex_contains", "operand": "^\$", "match_all": true }
    ]
},

注意转义的美元符号\$。在编辑器中，它们以红色突出显示，当我试图保存文件时，会收到一条无效的转义错误消息。转义美元符号的正确方法是什么？

注意转义 您将在这里经历两层编程。首先是Python，然后是JSON。因此，您的转义美元符号实际上需要转义两次：

"args": {"contents": "\\$$0\\$"}

升华文本读取设置文件后，Python将去掉第一个转义，留下以下JSON表示

"args": {"contents": "\$$0\$"}

然后，一旦JSON被解析，您将最终得到

"args": {"contents": "$$0$"}

不要逃避按键 您不需要在

keys

列表中转义

$

。击键是一个字面上的美元符号，因此不需要转义

以下是第一个设置的外观：

{ "keys": ["$"], "command": "insert_snippet", "args": {"contents": "\\$$0\\$"}, "context":
    [
        { "key": "setting.auto_match_enabled", "operator": "equal", "operand": true },
        { "key": "selection_empty", "operator": "equal", "operand": true, "match_all": true },
        { "key": "following_text", "operator": "regex_contains", "operand": "^(?:\t| |\\)|]|\\}|>|$)", "match_all": true },
        { "key": "preceding_text", "operator": "not_regex_contains", "operand": "[\\$a-zA-Z0-9_]$", "match_all": true },
        { "key": "eol_selector", "operator": "not_equal", "operand": "string.quoted.double", "match_all": true }
    ]
},

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上帝保佑你，我的朋友