[Batch File] Fix line continuation #3999
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This commit applies the following rule: If `^` appears at the end of a line, the linefeed is stripped and the next character is escaped or uses its special meaning, if any. If the next character is also a linefeed, it is treated literal. REM command seems to be working special by line continuation working only directly after the first token.
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mataha
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Jun 23, 2024
A caret (`^`) at the beginning of a continued line is printed literal
as it is escaped by the continuing caret after stripping newline character.
1. It does not introduce an escape sequence.
2. It is not scoped `constant.character.escape` as it is just printed as is.
3. It differs from `^^` escape sequences by escaping caret already being
scoped `punctuation.separator.continuation.line`.
Rule
====
Escaped <LF>
- <LF> is stripped
- The next character is escaped. If at the end of line buffer,
then the next line is read and processed by phases 1 and 1.5
and appended to the current one before escaping the next character.
Note:
Due to `^` being treated special, only at beginning of line, this construct
won't be supported properly under all circumstances when embedding batch
syntax into Markdown or any other syntax, with probably indented code blocks.
May be of interest, if syntax is extended by template languages.
michaelblyons
approved these changes
Jun 26, 2024
jrappen
approved these changes
Jul 4, 2024
FichteFoll
approved these changes
Jul 9, 2024
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This commit applies the following rule:
If
^appears at the end of a line, the linefeed is stripped and the next character is escaped or uses its special meaning, if any. If the next character is also a linefeed, it is treated literal.REM command seems to be working special by line continuation working only directly after the first token.