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runtime(syntax-tests): Break up non-ASCII over-75-byte-long lines

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And anticipate occasional multibyte line wrapping owing to:
> A poorly rendered line may otherwise become wrapped when enough of
> spurious U+FFFD (0xEF 0xBF 0xBD) characters claim more columns than
> are available (75) and then invalidate line correspondence under test.

Observe that for "vim_ex_command.vim" another workaround is
chosen: the long line containing an only multibyte character
near its EOL is conversely made longer by padding and moving
the character to a separate _tail_ part of the wrapped line.
That is, the _head_ part of the line is all ASCII characters
and the wrapped _tail_ part is a mix of various characters
whose total byte count is within bounds.

Other unmodified tracked files of interest:
  java_lambda_expressions.java,
  java_lambda_expressions_signature.java,
  java_numbers.java,
  markdown_conceal.markdown,
  vim9_generic_function_example_set.vim

Also, remove stray U+FFFC (0xEF 0xBF 0xBC) characters.

Related to #16559 and #17704.

Reference:
0fde6aebdd/runtime/syntax/testdir/README.txt (L120-L123)

closes: #17868

Signed-off-by: Aliaksei Budavei <0x000c70@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
This commit is contained in:
Aliaksei Budavei
2025-08-06 12:50:30 +02:00
committed by Christian Brabandt
parent 3769100a8e
commit af2c8e256a
50 changed files with 106 additions and 100 deletions
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6
runtime/syntax/testdir/input/c_string_literal.c
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@ -41,11 +41,13 @@ int main(void)
printf("0x%02X ", +(unsigned char)s2[n]);
#endif
puts("}");
printf(" u\"a猫🍌\" is a char16_t[%zu] holding { ", sizeof s3 / sizeof *s3);
printf(" u\"a猫🍌\" is a char16_t[%zu] holding { ",
sizeof s3 / sizeof *s3);
for(size_t n = 0; n < sizeof s3 / sizeof *s3; ++n)
printf("0x%04" PRIXLEAST16" ", s3[n]);
puts("}");
printf(" U\"a猫🍌\" is a char32_t[%zu] holding { ", sizeof s4 / sizeof *s4);
printf(" U\"a猫🍌\" is a char32_t[%zu] holding { ",
sizeof s4 / sizeof *s4);
for(size_t n = 0; n < sizeof s4 / sizeof *s4; ++n)
printf("0x%08" PRIXLEAST32" ", s4[n]);
puts("}");