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
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LL | ␜␟ts␀![{i
| -- unclosed delimiter
| |
| unclosed delimiter
LL | ␀␀ fn rݻoa>rݻm
| ^
```
42 lines
990 B
Plaintext
42 lines
990 B
Plaintext
error: unknown start of token: \u{1c}
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--> $DIR/issue-68629.rs:4:1
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LL | ␜␟ts␀![{i
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| ^
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error: unknown start of token: \u{1f}
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--> $DIR/issue-68629.rs:4:2
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LL | ␜␟ts␀![{i
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| ^
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error: unknown start of token: \u{0}
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--> $DIR/issue-68629.rs:4:5
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LL | ␜␟ts␀![{i
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| ^
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= help: source files must contain UTF-8 encoded text, unexpected null bytes might occur when a different encoding is used
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error: unknown start of token: \u{0}
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--> $DIR/issue-68629.rs:5:1
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LL | ␀␀ fn rݻoa>rݻm
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| ^^
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= help: source files must contain UTF-8 encoded text, unexpected null bytes might occur when a different encoding is used
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= note: character appears once more
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error: this file contains an unclosed delimiter
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--> $DIR/issue-68629.rs:5:17
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LL | ␜␟ts␀![{i
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| -- unclosed delimiter
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| unclosed delimiter
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LL | ␀␀ fn rݻoa>rݻm
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| ^
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error: aborting due to 5 previous errors
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