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Kate LSP Status – July 22

Monday, 22 July 2019 | Christoph Cullmann

After my series of LSP client posts, I got the question: What does this actually do? And why should I like this or help with it?

For the basic question: What the heck is the Language Server Protocol (LSP), I think my first post can help. Or, for more details, just head over to the official what/why/… page.

But easier than to describe why it is nice, I can just show the stuff in action. Below is a video that shows the features that at the moment work with our master branch. It is shown using the build directory of Kate itself.

To get a usable build directory, I build my stuff locally with kdesrc-build, the only extra config I have in the global section of my .kdesrc-buildrc is:

cmake-options -DCMAKE_BUILD_TYPE=RelWithDebInfo -G “Kate - Unix Makefiles” -DCMAKE_EXPORT_COMPILE_COMMANDS=ON

This will auto generate the needed .kateproject files for the Kate project plugin and the compile_commands.json for clangd (the LSP server for C/C++ the plugin uses).

If you manually build your stuff with cmake, you can just add the


parts to your cmake call. If you use ninja and not make, just use


Then, let’s see what you can do, once you are in a prepared build directory and have a master version of Kate in your PATH.

I hope the quality is acceptable, that is my first try in a long time to do some screen-cast ;)

As you can see, this is already in an usable state at least for C/C++ in combination with clangd.

For details how to build Kate master with it’s plugins, please take a look at this guide.

If you want to start to hack on the plugin, you find it in the kate.git, addons/lspclient.

Feel welcome to show up on and help out! All development discussions regarding this plugin happen there.

If you are already familiar with Phabricator, post some patch directly at KDE’s Phabricator instance.