pygments: Error parsing Python raw f-string with backslash
Python(3) code using raw f-strings containing a backslash within escaped braces (i.e. double braces) cannot be parsed. A minimum example is
fr'{{\S'
Some pointers:
- Works:
f'{{\S'. - Works:
r'{{\S' - Works:
rf'{{'. - Works:
rf'\S'. - Also do not work:
rf'{{\S'. - The
Sis not important, though some character must be there in order for the syntax to be valid.
This might seem like a pretty esoteric case. For me it comes up a lot when writing LaTeX in Matplotlib.
About this issue
- Original URL
- State: closed
- Created 3 years ago
- Comments: 19 (9 by maintainers)
ā¦ though Iām now slightly reconsidering whether I should have asked the question, I appreciate the answers and discussion š
That looks quite promising ā looking forward to the PR!
Thank you for leading the way.
I have a version that more or less solves all these problems for all bytes and string literals, I still need to clean up a bit but results are great so far.
Updated examples from https://docs.python.org/3/reference/lexical_analysis.html#formatted-string-literals.