$ annotate-output make 21:41:21 I: Started make 21:41:21 O: gcc -Wall program.c 21:43:18 E: program.c: Couldn't compile, and took me ages to find out 21:43:19 E: collect2: ld returned 1 exit status 21:43:19 E: make: *** [all] Error 1 21:43:19 I: Finished with exitcode 2
This is unfortunately very hard to fix with the current annotation strategy. A fix would involve switching to PTRACE'ing the process. Giving nice a (much) higher priority over the executed program could however cause this behaviour to show up less frequently.
The program does not work as well when the output is not linewise. In particular, when an interactive program asks for input, the question might not be shown until after you have answered it. This will give the impression that the annotated program has hung, while it has not.
annotate-output does not currently accept any command-line options, so --help, --version, and that kind of stuff do not currently work (unless you install /usr/bin/--help ;) ).
Get rich with this very sophisticated piece of bash.
This program is community-supported (meaning: you'll need to fix it yourself). Patches are however appreciated, as is any feedback (positive or negative).