patch 8.0.0649: when opening a help file the filetype is set several times commit https://github.com/vim/vim/commit/9049298f8d0bbc237b7c666c7ad6cdabe738e8fc Author: Bram Moolenaar <Bram@vim.org> Date: Thu Jun 22 14:16:31 2017 +0200 patch 8.0.0649: when opening a help file the filetype is set several times Problem: When opening a help file the filetype is set several times. Solution: When setting the filetype to the same value from a modeline, don't trigger FileType autocommands. Don't set the filetype to "help" when it's already set correctly.

[ The mve awk script was posted on the vimdev mailing list ]

From: jimmer@barney.mdhc.mdc.com (J. McGlasson)
Date: Mon, 31 Mar 1997 13:16:49 -0700 (Mar)

My compiler (SGI MIPSpro C compiler - IRIX 6.4) works like this.
I have written a script mve (make vim errors), through which I pipe my make
output, which translates output of the following form:

cfe: Error: syntax.c, line 4: Syntax Error
     int i[12;
 ------------^

into:

 cl.c, line 4, col 12 :  Syntax Error

(in vim notation:  %f, line %l, col %c : %m)

You might be able to tailor this for your compiler's output.