jcfaria/Vim-R-plugin — pull request #69 by mdlerch (2013-11-10 02:47:21+00:00)
Title: fix oversized help width when nu or rnu is set

This fixes the issue and I think it is similar to how you seem to want it to work (automatically determine the text width rather than have the user optionally set it). I also got rid of all the vimrplugin_htw that I previously proposed as a way to fix with a user defined parameter.