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meson/docs/markdown/snippets/more-escape-sequences.md

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String escape character update

The strings (both single-quoted and triple-quoted) in meson has been taught the same set of escape sequences as in Python. It is therefore now possible to use arbitrary bytes in strings, like for example NUL (\0) and other ASCII control characters. See the chapter about Strings in Syntax for more details.

Potential backwards compatibility issue: Any valid escape sequence according to the new rules will be interpreted as an escape sequence instead of the literal characters. Previously only single-quote strings supported escape sequences and the supported sequences were \', \\ and \n.

The most likely breakage is usage of backslash-n in triple-quoted strings. It is now written in the same way as in single-quoted strings: \\n instead of \n. In general it is now recommended to escape any usage of backslash. However, backslash-c (\c), for example, is still backslash-c because it isn't a valid escape sequence.