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2d7795dfb9
No longer track "zero-width" chars in `SourceMap`, read directly from the line when calculating the `display_col` of a `BytePos`. Move `char_width` to `rustc_span` and use it from the emitter.
This change allows the following to properly align in terminals (depending on the font, the replaced control codepoints are rendered as 1 or 2 width, on my terminal they are rendered as 1, on VSCode text they are rendered as 2):
```
error: this file contains an unclosed delimiter
--> $DIR/issue-68629.rs:5:17
|
LL | ␜␟ts␀![{i
| -- unclosed delimiter
| |
| unclosed delimiter
LL | ␀␀ fn rݻoa>rݻm
| ^
```
32 lines
721 B
Plaintext
32 lines
721 B
Plaintext
warning: multiple lines skipped by escaped newline
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--> $DIR/str-escape.rs:6:14
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LL | let s = "\
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LL | |
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LL | | ";
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| |_____________^ skipping everything up to and including this point
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warning: whitespace symbol '\u{a0}' is not skipped
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--> $DIR/str-escape.rs:12:18
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LL | let s = c"foo\
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LL | | bar
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| | ^ whitespace symbol '\u{a0}' is not skipped
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warning: whitespace symbol '\u{c}' is not skipped
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--> $DIR/str-escape.rs:26:16
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LL | let s = b"a\
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LL | | ␌b";
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| | ^ whitespace symbol '\u{c}' is not skipped
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warning: 3 warnings emitted
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