The character used to do character escaping. If a string is provided only spaces
are escaped. If a { escapeChar, charsToEscape } literal is provide all characters
in charsToEscape are escaped using the escapeChar.
The character used for strong quoting. The string's length must be 1.
The character used for weak quoting. The string's length must be 1.
友链：VS Code 中文文档 | VS Code 官网文档 | VS Code 扩展市场
The shell quoting options.