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RUBY *ruby.vim* *ft-ruby-syntax*
There are a number of options to the Ruby syntax highlighting.
1. Ruby operators |ruby_operators|
2. Whitespace errors |ruby_space_errors|
3. Folds |ruby_fold|
4. Reducing expensive operations |ruby_no_expensive| |ruby_minlines|
==============================================================================
1. Ruby operators *ruby_operators*
Ruby operators can be highlighted.
This is enabled by defining "ruby_operators": >
:let ruby_operators = 1
<
==============================================================================
2. Whitespace errors *ruby_space_errors*
Whitespace errors can be highlighted by defining "ruby_space_errors": >
:let ruby_space_errors = 1
<
This will highlight trailing whitespace and tabs preceded by a space character
as errors. This can be refined by defining "ruby_no_trail_space_error" and
"ruby_no_tab_space_error" which will ignore trailing whitespace and tabs after
spaces respectively.
==============================================================================
3. Folds *ruby_fold*
Folds can be enabled by defining "ruby_fold": >
:let ruby_fold = 1
<
This will set the value |foldmethod| to "syntax" locally to the current buffer
or window, which will enable syntax-based folding when editing Ruby filetypes.
==============================================================================
4. Reducing expensive operations *ruby_no_expensive*
By default, the "end" keyword is colorized according to the opening statement
of the block it closes. While useful, this feature can be expensive; if you
experience slow redrawing (or you are on a terminal with poor color support)
you may want to turn it off by defining the "ruby_no_expensive" variable: >
:let ruby_no_expensive = 1
<
In this case the same color will be used for all control keywords.
*ruby_minlines*
If you do want this feature enabled, but notice highlighting errors while
scrolling backwards, which are fixed when redrawing with CTRL-L, try setting
the "ruby_minlines" variable to a value larger than 50: >
:let ruby_minlines = 100
<
Ideally, this value should be a number of lines large enough to embrace your
largest class or module.
vim:tw=78:sw=4:ts=8:ft=help:norl:
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