add --message-format short option

[vitiral]

I copied this from rust-lang/cargo#4165 at @alexcrichton's request

--message-format currently has the following options:

--message-format FMT         Error format: human, json [default: human]

I would like an additional option to be added: short. Other possible names:

• brief
• oneline

I've been programming in rust for the better part of a year now. The compiler has been my friend and mentor through this time, and a big part of that has been the fantastic human readable error messages. Thank you so much for them!

However, I have gotten much more familiar with the language and my common mistakes. Therefore I rarely need the error messages to be so long (sometimes they are longer than 10-15 lines!). Normally I just need the compiler to give the me the file, line/col number and name of the error and I can spot it myself very quickly.

For an experienced programmer, the option of a shorter format would make finding errors much more ergonomic.

The following pipe does roughly what I want, although it would be nice if it was all on one line and the path:line:col was at the beginning

# cargo test |& rg "(error\[\w+\])|(^\s+--> \w+/\w+)" -N --color never
error[E0061]: this function takes 2 parameters but 3 parameters were supplied
   --> src/user/tests.rs:186:37
error[E0061]: this function takes 2 parameters but 3 parameters were supplied
   --> src/export.rs:133:51
error[E0061]: this function takes 2 parameters but 3 parameters were supplied
   --> src/export.rs:139:37
error[E0063]: missing field `revision` in initializer of `export::ArtifactData`
   --> src/export.rs:149:20

Thanks!

[GuillaumeGomez]

I'll do it in the next days or so.

[GuillaumeGomez]

First, writing a new Emitter: https://github.com/rust-lang/rust/blob/master/src/librustc_errors/emitter.rs

[dataf3l]

I think this is very important.

[GuillaumeGomez]

?