[BUG] Multi-line f-string literals do not adhere to """\ syntax about cython HOT 1 OPEN

Paebbels commented on May 28, 2024

[BUG] Multi-line f-string literals do not adhere to """\ syntax

from cython.

Comments (1)

da-woods commented on May 28, 2024

I think it'll just be in

cython/Cython/Compiler/Parsing.py

Lines 1143 to 1163 in b197288

 _parse_escape_sequences_raw, _parse_escape_sequences = [re.compile(( 

 # escape sequences: 

 br'(\\(?:' + 

 (br'\\?' if is_raw else ( 

 br'[\\abfnrtv"\'{]|' 

 br'[0-7]{2,3}|' 

 br'N\{[^}]*\}|' 

 br'x[0-9a-fA-F]{2}|' 

 br'u[0-9a-fA-F]{4}|' 

 br'U[0-9a-fA-F]{8}|' 

 br'[NxuU]|' # detect invalid escape sequences that do not match above 

 )) + 

 br')?|' 

 # non-escape sequences: 

 br'\{\{?|' 

 br'\}\}?|' 

 br'[^\\{}]+)' 

 ).decode('us-ascii')).match 

 for is_raw in (True, False) 

 ]

but I'm struggling to see that regex as anything other than a random collection of slashes and brackets at the moment.

from cython.

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[BUG] Multi-line f-string literals do not adhere to """\ syntax about cython HOT 1 OPEN

Comments (1)

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	_parse_escape_sequences_raw, _parse_escape_sequences = [re.compile((
	# escape sequences:
	br'(\\(?:' +
	(br'\\?' if is_raw else (
	br'[\\abfnrtv"\'{]\|'
	br'[0-7]{2,3}\|'
	br'N\{[^}]*\}\|'
	br'x[0-9a-fA-F]{2}\|'
	br'u[0-9a-fA-F]{4}\|'
	br'U[0-9a-fA-F]{8}\|'
	br'[NxuU]\|' # detect invalid escape sequences that do not match above
	)) +
	br')?\|'
	# non-escape sequences:
	br'\{\{?\|'
	br'\}\}?\|'
	br'[^\\{}]+)'
	).decode('us-ascii')).match
	for is_raw in (True, False)
	]