Nicholas Nethercote 306612ea60 Be more careful about interpreting a label/lifetime as a mistyped char literal.
Currently the parser will interpret any label/lifetime in certain
positions as a mistyped char literal, on the assumption that the
trailing single quote was accidentally omitted. This is reasonable for a
something like 'a (because 'a' would be valid) but not reasonable for a
something like 'abc (because 'abc' is not valid).

This commit restricts this behaviour only to labels/lifetimes that would
be valid char literals, via the new `could_be_unclosed_char_literal`
function. The commit also augments the `label-is-actually-char.rs` test
in a couple of ways:
- Adds testing of labels/lifetimes with identifiers longer than one
  char, e.g. 'abc.
- Adds a new match with simpler patterns, because the
  `recover_unclosed_char` call in `parse_pat_with_range_pat` was not
  being exercised (in this test or any other ui tests).

Fixes #120397, an assertion failure, which was caused by this behaviour
in the parser interacting with some new stricter char literal checking
added in #120329.
2024-01-29 11:25:09 +11:00
..
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2024-01-13 12:46:58 -05:00
fix
2023-10-09 19:24:05 +00:00
2023-11-16 17:00:23 +00:00
2023-10-04 01:35:07 +00:00
2023-10-04 01:35:07 +00:00