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|
*if_ruby.txt* Nvim
VIM REFERENCE MANUAL by Shugo Maeda
The Ruby Interface to Vim *if_ruby* *ruby* *Ruby*
*E266* *E267* *E268* *E269* *E270* *E271* *E272* *E273*
The home page for ruby is https://www.ruby-lang.org/. You can find links for
downloading Ruby there.
Type |gO| to see the table of contents.
==============================================================================
1. Commands *ruby-commands*
*:ruby* *:rub*
:rub[y] {cmd} Execute Ruby command {cmd}. A command to try it out: >
:ruby print "Hello"
:rub[y] << [endmarker]
{script}
{endmarker}
Execute Ruby script {script}.
The {endmarker} after {script} must NOT be preceded by
any white space.
If [endmarker] is omitted, it defaults to a dot '.'
like for the |:append| and |:insert| commands.
This form of the |:ruby| command is mainly useful for
including ruby code in vim scripts.
Example Vim script: >
function! RedGem()
ruby << EOF
class Garnet
def initialize(s)
@buffer = VIM::Buffer.current
vimputs(s)
end
def vimputs(s)
@buffer.append(@buffer.count,s)
end
end
gem = Garnet.new("pretty")
EOF
endfunction
<
To see what version of Ruby you have: >
:ruby print RUBY_VERSION
<
*:rubydo* *:rubyd* *E265*
:[range]rubyd[o] {cmd} Evaluate Ruby command {cmd} for each line in the
[range], with $_ being set to the text of each line in
turn, without a trailing <EOL>. Setting $_ will change
the text, but note that it is not possible to add or
delete lines using this command.
The default for [range] is the whole file: "1,$".
*:rubyfile* *:rubyf*
:rubyf[ile] {file} Execute the Ruby script in {file}. This is the same as
`:ruby load 'file'`, but allows file name completion.
Executing Ruby commands is not possible in the |sandbox|.
==============================================================================
2. The VIM module *ruby-vim*
Ruby code gets all of its access to vim via the "VIM" module.
Overview >
print "Hello" # displays a message
VIM.command(cmd) # execute an Ex command
num = VIM::Window.count # gets the number of windows
w = VIM::Window[n] # gets window "n"
cw = VIM::Window.current # gets the current window
num = VIM::Buffer.count # gets the number of buffers
b = VIM::Buffer[n] # gets buffer "n"
cb = VIM::Buffer.current # gets the current buffer
w.height = lines # sets the window height
w.cursor = [row, col] # sets the window cursor position
pos = w.cursor # gets an array [row, col]
name = b.name # gets the buffer file name
line = b[n] # gets a line from the buffer
num = b.count # gets the number of lines
b[n] = str # sets a line in the buffer
b.delete(n) # deletes a line
b.append(n, str) # appends a line after n
line = VIM::Buffer.current.line # gets the current line
num = VIM::Buffer.current.line_number # gets the current line number
VIM::Buffer.current.line = "test" # sets the current line number
<
Module Functions:
*ruby-message*
VIM::message({msg})
Displays the message {msg}.
*ruby-set_option*
VIM::set_option({arg})
Sets a vim option. {arg} can be any argument that the ":set" command
accepts. Note that this means that no spaces are allowed in the
argument! See |:set|.
*ruby-command*
VIM::command({cmd})
Executes Ex command {cmd}.
*ruby-evaluate*
VIM::evaluate({expr})
Evaluates {expr} using the vim internal expression evaluator (see
|expression|). Returns the expression result as a string.
A |List| is turned into a string by joining the items and inserting
line breaks.
==============================================================================
3. VIM::Buffer objects *ruby-buffer*
VIM::Buffer objects represent vim buffers.
Class Methods:
current Returns the current buffer object.
count Returns the number of buffers.
self[{n}] Returns the buffer object for the number {n}. The first number
is 0.
Methods:
name Returns the full name of the buffer.
number Returns the number of the buffer.
count Returns the number of lines.
length Returns the number of lines.
self[{n}] Returns a line from the buffer. {n} is the line number.
self[{n}] = {str}
Sets a line in the buffer. {n} is the line number.
delete({n}) Deletes a line from the buffer. {n} is the line number.
append({n}, {str})
Appends a line after the line {n}.
line Returns the current line of the buffer if the buffer is
active.
line = {str} Sets the current line of the buffer if the buffer is active.
line_number Returns the number of the current line if the buffer is
active.
==============================================================================
4. VIM::Window objects *ruby-window*
VIM::Window objects represent vim windows.
Class Methods:
current Returns the current window object.
count Returns the number of windows.
self[{n}] Returns the window object for the number {n}. The first number
is 0.
Methods:
buffer Returns the buffer displayed in the window.
height Returns the height of the window.
height = {n} Sets the window height to {n}.
width Returns the width of the window.
width = {n} Sets the window width to {n}.
cursor Returns a [row, col] array for the cursor position.
First line number is 1 and first column number is 0.
cursor = [{row}, {col}]
Sets the cursor position to {row} and {col}.
==============================================================================
5. Global variables *ruby-globals*
There are two global variables.
$curwin The current window object.
$curbuf The current buffer object.
==============================================================================
6. rubyeval() Vim function *ruby-rubyeval*
To facilitate bi-directional interface, you can use |rubyeval()| function to
evaluate Ruby expressions and pass their values to Vim script.
The Ruby value "true", "false" and "nil" are converted to v:true, v:false and
v:null, respectively.
==============================================================================
vim:tw=78:ts=8:noet:ft=help:norl:
|
