When 'efm' is set in a compiler plugin, and the :compile command is
executed in a configuration file, ":verbose set efm?" reports the
file name of the file where :compiler was executed and the line
number of compiler plugin where ":set efm=..." was executed.
I expected to see :verbose report either the name of the file in
which :compiler was executed and the line number of the :compiler
command, or the name of the compiler plugin and the line number
where 'efm' was set. I would prefer the latter.
Here's an illustration of the problem.
Create a file named vimrc (name doesn't matter) in your home
directory (directory doesn't matter) containing only this command on
line 3 (line doesn't matter but I wanted something other than 1).
compiler ant
Execute the following command from the shell prompt:
$ vim -N --noplugin -u vimrc -i NONE
Execute the following command on Vim's command line:
:verbose set efm?
errorformat= %#[%.%#] %#%f:%l:%v:%*\d:%*\d: %t%[%^:]%#:%m,%A %#[%.%#]
%f:%l: %m,%-Z %#[%.%#] %p^,%C %#[%.%#] %#%m
Last set from ~/vimrc line 32
'efm' is actually set at line 32 of $VIMRUNTIME/compiler/ant.vim.
A similar problem occurs when executing :compiler from Vim's command
line. For example:
$ vim -N -u NONE -i NONE
:compiler ant
:verbose set efm?
errorformat= %#[%.%#] %#%f:%l:%v:%*\d:%*\d: %t%[%^:]%#:%m,%A %#[%.%#]
%f:%l: %m,%-Z %#[%.%#] %p^,%C %#[%.%#] %#%m
In this case, no information at all is given about where 'efm' was
set. I understand an argument that the user set 'efm' from the
command line via the :compiler command, but it's not helpful for
diagnosing problems.
I'm using the latest vim, 8.2.3582, in an xterm on an Ubuntu 20.04.3
system.
Regards,
Gary
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