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# Helpful Vim tools for Fuchsia development
## Features
The [`fuchsia.vim`](/scripts/vim/fuchsia.vim) script sets up Vim
to do the following:
* Set paths so that `:find` and `gf` know how to find files.
* Enable FIDL syntax highlighting (using `/lib/fidl/tools/vim/`).
* Integrate basic build system so that `:make` builds and populates the
QuickFix window.
* Configure [YouCompleteMe](/docs/development/editors/ (YCM)
to provide error checking, code completion, and source navigation
within the Fuchsia tree.
## Installation
The steps are:
1. [Update your login script](#update-your-login-script).
1. [Run the fx set command](#run-the-fx-set-command).
1. [Update your Vim startup file](#update-your-vim-startup-file).
1. [Restart Vim to configure YouCompleteMe](#restart-vim-to-configure-ycm).
1. [Build a compilation database](#build-a-compilation-database).
### Update your login script {:#update-your-login-script}
Add the following line to your startup script (typically `~/.bashrc`):
export FUCHSIA_DIR=<your_fuchsia_source_directory>
### Run the fx set command {:#run-the-fx-set-command}
This command uses the format `fx set [PRODUCT].[BOARD]`. For example:
fx set core.x64
### Update your Vim startup file {:#update-your-vim-startup-file}
If the following line exists in your `~/.vimrc` file, remove it:
filetype plugin indent on
Then add the following lines to your `~/.vimrc`:
if $FUCHSIA_DIR != ""
source $FUCHSIA_DIR/scripts/vim/fuchsia.vim
filetype plugin indent on
### Restart Vim to configure YouCompleteMe {:#restart-vim-to-configure-ycm}
Note: If you haven't installed YouCompleteMe,
see [this installation guide] ({:.external}
to install YCM on your workstation.
To configure YouCompleteMe (YCM), you need to source the
[`fuchsia.vim`](/scripts/vim/fuchsia.vim) file.
Restart your Vim to run the
`source $FUCHSIA_DIR/scripts/vim/fuchsia.vim` command in your `~/.vimrc`
file (see [Update your Vim startup file](#update-yout-vim-startup-file)).
To verify that your YCM works, place the cursor on an
identifier in a `.cc` or `.h` file in Vim, then hit `Ctrl+]`
to navigate to the definition of the identifier.
### Build a compilation database {:#build-a-compilation-database}
YCM uses the
[compilation database]({:.external},
which is more reliable and efficient than the default
[`` configuration](/docs/development/editors/
To build a compilation database, run the following command:
fx compdb