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I just downloaded the Rails vim plugin from here.

One of the file that it contain is a doc file that will be extracted to ~/.vim/doc/rails.txt

How do I open the content of this help file in vim ?

I tried :help rails to no avail.

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up vote 16 down vote accepted

After installing a new help file into ~/.vim/doc, you need to rebuild the help tags file:

:helptags ~/.vim/doc

Then your :help rails command should work.

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awesome. thanks! – ryanprayogo Mar 21 '11 at 21:49

garyjohn's answer is right, but I just want to mention that pathogen provides an easy way to run helptags for each plugin (note the case):

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