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vim-codespell

A vim plugin for checking the spelling for source code. The main difference from the built-in spell checker is that it handles CamelCase, snake_case better, and you can add custom words to it.

Installation

• Enable vim python3 support
• Install [aspell][http://aspell.net/]
  • Mac: brew install aspell
  • Ubuntu: sudo apt-get install aspell
• Add it to vim with the vim plugin manager of your choice.
  • Vundle: Add Plugin 'shinglyu/vim-codespell' to your ~/.vimrc and run :PluginInstall
• To use the custom dictionary, you need to build it.
  • Go to the installed location of the plugin. (For Vundle on Mac it's cd ~/.vim/bundle/vim-codespell)
  • cd dict
  • ./build.sh

Commands

• :Codespell: Run the spell checker once

• To run it everytime you save a *.py file, add the following to your vimrc:

:autocmd BufWritePre *.py :Codespell

Testing

• sudo pip3 install pytest pytest-benchmark (Or use virtualenv)
• py.test

Generating Dictionaries

You can add custom words to the dictionary.

• Create a text file in dict/ (e.g. dict/cs.list) of words, one word per line
• Generate the dictionary

aspell --lang=en create master ./cs.dict < cs.list

A dictionary file cs.dict will be generated in the current dir. The plugin will pick it up using the default filename.

• Test the dictionary locally:

cat file_to_be_checked.txt | aspell -l en -d cs.dict --dict-dir=./ --list

The --dict-dir must be specified otherwise aspell will check the default location.

Tips

• Check if python3 is supported in your vim build: vim --version, look for the string "+python3".
• To load it temporarily for test, cd to plugin/, run vim -S codespell.vim.
• :match Error /\%2l\%>1c\%<4c./: highlight line 2 (\%2l) and column 2 (\%>1c) to column 3 (\%<4c), the . is required because the match is 0 width.

References

• Python's vim interface doc
• Learn vimscript the hard way