1.39 error messages don't properly truncate, making autogenerated files (e.g. bindgen) spam the terminal

[q66]

A paste is worth a thousand words, even if it has many thousands of words itself: https://gist.githubusercontent.com/q66/7004995a784b59475134a290512cf545/raw/a42c4af7648c142175c5244494f74d30dfe1b340/gistfile1.txt

[q66]

Actually, the source file appears to be one line. It's generated by rust-bindgen.

[q66]

Here's the generated file from firefox: https://gist.githubusercontent.com/q66/ac25123ed168f61e2972af0bbc90fff0/raw/229094c3e8dfda7382eec22563d08538eaf83c03/gistfile1.txt

[estebank]

#63402 implements the feature, but it needs to be integrated with cargo.

[est31]

See also the bindgen bug: rust-lang/rust-bindgen#1600

I've added some pretty-printing code to my own project: RustAudio/deepspeech-rs@3323b0e

Optimally it would live in bindgen though. Want to port it to bindgen, @q66 ?

[q66]

no thanks, i have enough of my own work and prefer to touch this kinda stuff as little as possible. For now, I took patches from Gentoo to fix compilation of firefox/thunderbird (and adapted it for other stuff so that e.g. icecat can also build), which seems to work ok.

[estebank]

I believe all of the work necessary here has been completed. Extremely long types in messages are now truncated and written to disk, and cargo passes through the terminal's width to rustc to truncate the code window in diagnostics.