Added additional instructions for setting up language servers

README.md

@@ -33,7 +33,7 @@ towards libclang with speed, stability, and ease of use in mind.
 * OpenCL and CUDA files are supported and parsed as C++
 * Other file types:
     * Language server protocol support is enabled if `[language identifier]-language-server` executable is found. This executable can be a symbolic link to one of your installed language server binaries.
-See [language-server-protocol/specification.md](https://github.com/Microsoft/language-server-protocol/blob/gh-pages/specification.md) for the currently defined language identifiers.
+        * For additional instructions, see: [setup of tested language servers](docs/language_servers.md)
     * otherwise, only keyword and buffer completion supported
 * Find symbol through Ctags
 * Spell checking depending on file context

docs/language_servers.md

@@ -0,0 +1,51 @@
+# Setup of tested language servers
+
+## JavaScript with Flow static type checker
+* Prerequisites:
+    * Node.js
+* Recommended:
+    * [Prettier](https://github.com/prettier/prettier)
+
+Install language server, and create executable to enable server in juCi++:
+```sh
+npm install -g flow-language-server
+
+echo '#!/bin/bash
+flow-language-server --stdio' > /usr/local/bin/javascript-language-server
+
+chmod 755 /usr/local/bin/javascript-language-server
+```
+
+* Additional setup within a JavaScript project:
+    * Add a `.prettierrc` file to enable style format on save
+
+## Python3
+* Prerequisites:
+    * Python3
+    * In juCi++ preferences, set `project.python_command` to `PYTHONUNBUFFERED=1 python3`
+  
+Install language server, and create symbolic link to enable server in juCi++:
+```sh
+pip3 install python-language-server
+
+ln -s pyls /usr/local/bin/python-language-server
+```
+
+* Additional setup within a Python project:
+    * Add a setup file, for instance: `printf '[pycodestyle]\nmax-line-length = 120\n\n[yapf]\nCOLUMN_LIMIT = 120\n' > setup.cfg`
+    * Add an empty `.python-format` file to enable style format on save
+
+## Rust
+* Prerequisites:
+    * Rust
+      
+Install language server, and create symbolic link to enable server in juCi++:
+```sh
+rustup update
+rustup component add rls-preview rust-analysis rust-src
+
+ln -s `rustc --print sysroot`/bin/rls /usr/local/bin/rust-language-server
+```
+
+* Additional setup within a Rust project:
+    * Add an empty `.rust-format` file to enable style format on save