I use the Konsole terminal, and have the "Find" bar always activated, with
"error:" typed in as the search string.
When I get a failing build, I click the handy "From bottom" button, which
searches backward from the bottom of the terminal output. That takes me to
the error I want to see in one click 99.9% of the time.
Cheers,
Botond
On Mon, Jan 12, 2015 at 5:09 PM, Nicholas Nethercote <n.netherc...@gmail.com
> wrote:
> Hi,
>
> If you do |mach build| and get compile errors, often those errors
> scroll quickly off screen and they are mixed in with other lines of
> output and it's hard to find them.
>
> I deal with this by using a bash alias that calls |mach build| and
> pipes the output to file. I can then use Vim's quicklists feature to
> jump directly to errors in the file. But sometimes I just want to
> eyeball the errors directly in the terminal, so in my alias I also
> have a post-build step that greps the output file for the first five
> error messages.
>
> This setup works well for me but it's also kinda gross [1] and this
> seems like a problem that everybody else working on C++ code has to
> deal with as well. So I'm wondering if there are other, better ways of
> doing it, and if so, could they be made automatic? There is |mach
> warnings-list| which is sort of like this, but not quite.
>
> Thanks.
>
> Nick
>
> [1] How gross? Here are the two most important lines:
>
> # Send mach's raw output to stdout and $config/log, and the
> # timestamp-stripped output to errors.err. The "$| = 1" disables Perl's
> # buffering, so the output is available immediately.
> MOZCONFIG=$HOME/moz/config/$config nice mach build $restdir 2>&1 | \
> tee >(perl -p -e '$| = 1; s/^ *\d+:\d\d\.\d\d //' > errors.err) \
> $config/log
>
> # Show up to five errors, with 10 lines of trailing context each. But
> # first, truncate line length to 300 chars (because I sometimes get
> # extremely long lines describing the command line used, which are
> # annoying).
> perl -p -e 's/^(.{300}).*$/\1/' $config/log | \
> grep --max-count=5 --before-context=3 --after-context=10 "\<error:"
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