Vim's QuickFix lists require 1-based columns, which is what is returned
from ycmd's commands.
As noted in the comments, the Vim documentation for setqflist is
somewhat vague about this "byte offset", but it is confirmed to mean
"1-based column number" both in testing and in :help getqflist.
We display the detailed info text in the preview window. Vim's preview window is
designed to display actual files, not scratch data. Our approach is to open a
temporary file, even though that file is never written. This way, all of Vim's
existing settings for the preview window (and people's configured mappings) just
work. This is also consistent with showing the documentation in the preview
window during completion.
Other plugins have more complicated functions for this (such as eclim), or
Scratch.vim, but this approach is simple and doesn't require external
dependencies or additional settings.
Tests:
This required fixing a sort-of-bug in which the mock'd Vim module was always
only set once, and could not be changed outside of the module which created it.
This meant that it wasn't easy to have arbitrary tests, because it was dependent
on the order in which the tests execute as to whether the return from
MockVimModule() was actually the one in use.
The solution was to make the mock'd vim module a singleton, and use mock's
patch decorator to assign new MagicMock() instances to those methods in the vim
module which a particular test is interested in.
This is required to allow the ycmd GetType and GetParent subcommands to echo
their reults in vim. The apporach is to display any text returned from a
subcommand in the 'message' property assuming that the command is not a known
'GoTo' command.
When I initially released this project, I released it under my own copyright. I
have since then worked on it in my 20% time at Google (and want to continue
doing this) and my life becomes much simpler if the copyright is Google's.
From the perspective of how this project is run and managed, **NOTHING**
changes. YCM is not a Google product, merely a project run by someone who just
happens to work for Google.
Please note that the license of the project is **NOT** changing.
People sending in future pull requests will have to sign the Google
[CLA](https://developers.google.com/open-source/cla/individual) (you can sign
online at the bottom of that page) before those pull requests could be merged
in. People who sent in pull requests that were merged in the past will get an
email from me asking them to sign the CLA as well.
There appear to be timing issues for the diag requests. Somehow, we're sending
out-of-date diagnostics and then not updating the UI when things change.
That needs to be fixed.