(Forked from Ruby Cyclomatic Complexity Plugin created by @skammer)

Indicates the Flog number in front of the action in your Ruby code to indicate the complexity.

• ruby
• flog rubygem
• vim 7.3+, compiled with:
  • +ruby
  • +signs

First of all make sure you have a Vim installed with Ruby support. If you use MacVim than you can build your own version of Vim like this.

Here is an example of my configuration during the build:

./configure --with-features=huge --enable-rubyinterp --enable-pythoninterp --enable-perlinterp --enable-cscope

Install the Flog gem like this: gem install flog.

To install the plugin just run this command in your Terminal:

curl https://raw.github.com/fousa/vim-flog/master/plugin/flog.vim -o ~/.vim/plugin/flog.vim

When this is done add :silent exe "g:flog_enable" to your .vimrc file.

To change colors of sings, use the higlight command. The used groups are

• SignLowComplexity
• SignMediumComplexity
• SignHighComplexity

You can set the limits for the complexity indication with the following commands in your .vimrc:

• Set the limit to switch to a medium complexity:
  :silent exe "let g:flog_medium_limit=10"

• Set the limit to switch to a high complexity:
  :silent exe "let g:flog_high_limit=20"

You can hide some levels of complexity:

• Hide low complexity:
  :silent exe "let g:flog_hide_low=1"

• Hide medium complexity:
  :silent exe "let g:flog_hide_medium=1"

You can also turn flog off and on:

• Turn on flog :call FlogEnable()

• Turn off flog :call FlogDisable()

• Toggle flog :call FlogToggle()

Additionally, you can map this in your .vimrc: :map ,f :call FlogToggle()<cr>

@garybernhardt's pycomplexity.vim.

@topfunky's rubycomplexity.el

@skammer's Ruby Cyclomatic Complexity Plugin