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diff --git a/runtime/doc/if_ruby.txt b/runtime/doc/if_ruby.txt new file mode 100644 index 0000000..dc8349f --- /dev/null +++ b/runtime/doc/if_ruby.txt @@ -0,0 +1,254 @@ +*if_ruby.txt* For Vim version 8.2. Last change: 2019 Jul 21 + + + VIM REFERENCE MANUAL by Shugo Maeda + +The Ruby Interface to Vim *ruby* *Ruby* + + +1. Commands |ruby-commands| +2. The Vim module |ruby-vim| +3. Vim::Buffer objects |ruby-buffer| +4. Vim::Window objects |ruby-window| +5. Global variables |ruby-globals| +6. rubyeval() Vim function |ruby-rubyeval| +7. Dynamic loading |ruby-dynamic| + + *E266* *E267* *E268* *E269* *E270* *E271* *E272* *E273* + +{only available when Vim was compiled with the |+ruby| feature} + +The home page for ruby is http://www.ruby-lang.org/. You can find links for +downloading Ruby there. + +============================================================================== +1. Commands *ruby-commands* + + *:ruby* *:rub* +:rub[y] {cmd} Execute Ruby command {cmd}. A command to try it out: > + :ruby print "Hello" + +:rub[y] << [trim] [{endmarker}] +{script} +{endmarker} + Execute Ruby script {script}. + + If [endmarker] is omitted, it defaults to a dot '.' + like for the |:append| and |:insert| commands. Refer + to |:let-heredoc| for more information. + + + This form of the |:ruby| command is mainly useful for + including ruby code in vim scripts. + + Note: This command doesn't work when the Ruby feature + wasn't compiled in. To avoid errors, see + |script-here|. + +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-blob* +Vim::blob({arg}) + Return |Blob| literal string from {arg}. + + *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 Integer if the Vim expression evaluates to a number + - a Float if the Vim expression evaluates to a float + - a String if the Vim expression evaluates to a string + - a Array if the Vim expression evaluates to a Vim list + - a Hash if the Vim expression evaluates to a Vim dictionary + Dictionaries and lists are recursively expanded. + +============================================================================== +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. + +============================================================================== +7. Dynamic loading *ruby-dynamic* + +On MS-Windows and Unix the Ruby library can be loaded dynamically. The +|:version| output then includes |+ruby/dyn|. + +This means that Vim will search for the Ruby DLL file or shared library only +when needed. When you don't use the Ruby interface you don't need it, thus +you can use Vim even though this library file is not on your system. + + +MS-Windows ~ + +You need to install the right version of Ruby for this to work. You can find +the package to download from: +http://rubyinstaller.org/downloads/ +Currently that is rubyinstaller-2.2.5.exe + +To use the Ruby interface the Ruby DLL must be in your search path. In a +console window type "path" to see what directories are used. The 'rubydll' +option can be also used to specify the Ruby DLL. + +The name of the DLL must match the Ruby version Vim was compiled with. +Currently the name is "msvcrt-ruby220.dll". That is for Ruby 2.2.X. To know +for sure edit "gvim.exe" and search for "ruby\d*.dll\c". + +If you want to build Vim with RubyInstaller 1.9 or 2.X using MSVC, you need +some tricks. See the src/INSTALLpc.txt for detail. + +If Vim is built with RubyInstaller 2.4 or later, you may also need to add +"C:\Ruby<version>\bin\ruby_builtin_dlls" to the PATH environment variable. + + +Unix ~ + +The 'rubydll' option can be used to specify the Ruby shared library file +instead of DYNAMIC_RUBY_DLL file what was specified at compile time. The +version of the shared library must match the Ruby version Vim was compiled +with. + +============================================================================== + vim:tw=78:ts=8:noet:ft=help:norl: |