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1d8cdaa01e
Stabilize terminal-width This stabilized the passing of the `--diagnostic-width` flag to rustc and rustdoc so that they will format diagnostics to fit within the terminal size. Previously they always assume the width is 140. The diagnostics are trimmed with `...` to elide parts of extra-long lines. In cases where the width isn't known (such as not when used on a tty, or with mintty), then cargo does not pass the flag and the default of 140 is still used. At this time there is no way for the user to override the width (unlike with the progress bar width). That can be added in the future if there is demand. https://github.com/rust-lang/rust/issues/84673#issuecomment-1179096971 contains some thoughts on some different ideas. Closes https://github.com/rust-lang/rust/issues/84673