if_mzsch.txt For Vim version 7.4. Last change: 2012 Dec 17LINK
VIM REFERENCE MANUAL by Sergey Khorev
The MzScheme Interface to Vim mzscheme MzSchemeLINK
1. Commands mzscheme-commands
2. Examples mzscheme-examples
3. Threads mzscheme-threads
4. Vim access from MzScheme mzscheme-vim
5. mzeval() Vim function mzscheme-mzeval
6. Using Function references mzscheme-funcref
7. Dynamic loading mzscheme-dynamic
{Vi does not have any of these commands}
The MzScheme interface is available only if Vim was compiled with the
+mzscheme feature.
Based on the work of Brent Fulgham.
Dynamic loading added by Sergey Khorev
MzScheme and PLT Scheme names have been rebranded as Racket. For more
information please check http://racket-lang.org
Futures and places of Racket version 5.x up to and including 5.3.1 do not
work correctly with processes created by Vim.
The simplest solution is to build Racket on your own with these features
disabled:
./configure --disable-futures --disable-places --prefix=your-install-prefix
To speed up the process, you might also want to use --disable-gracket and
--disable-docs
==============================================================================
1. Commands mzscheme-commandsLINK
:mzscheme :mzLINK
:[range]mz[scheme] {stmt}
Execute MzScheme statement {stmt}. {not in Vi}
:[range]mz[scheme] << {endmarker}
{script}
{endmarker}
Execute inlined MzScheme script {script}.
Note: This command doesn't work if the MzScheme
feature wasn't compiled in. To avoid errors, see
:mzfile :mzfLINK
:[range]mzf[ile] {file} Execute the MzScheme script in {file}. {not in Vi}
All of these commands do essentially the same thing - they execute a piece of
MzScheme code, with the "current range" set to the given line
range.
In the case of :mzscheme, the code to execute is in the command-line.
In the case of :mzfile, the code to execute is the contents of the given file.
MzScheme interface defines exception exn:vim, derived from exn.
It is raised for various Vim errors.
During compilation, the MzScheme interface will remember the current MzScheme
collection path. If you want to specify additional paths use the
'current-library-collection-paths' parameter. E.g., to cons the user-local
MzScheme collection path:
:mz << EOF
(current-library-collection-paths
(cons
(build-path (find-system-path 'addon-dir) (version) "collects")
(current-library-collection-paths)))
EOF
All functionality is provided through module vimext.
The exn:vim is available without explicit import.
To avoid clashes with MzScheme, consider using prefix when requiring module,
e.g.:
:mzscheme (require (prefix vim- vimext))
All the examples below assume this naming scheme.
mzscheme-sandboxLINK
When executed in the sandbox, access to some filesystem and Vim interface
procedures is restricted.
==============================================================================
2. Examples mzscheme-examplesLINK
:mzscheme (display "Hello")
:mz (display (string-append "Using MzScheme version " (version)))
:mzscheme (require (prefix vim- vimext)) ; for MzScheme < 4.x
:mzscheme (require (prefix-in vim- 'vimext)) ; MzScheme 4.x
:mzscheme (vim-set-buff-line 10 "This is line #10")
Inline script usage:
function! <SID>SetFirstLine()
:mz << EOF
(display "!!!")
(require (prefix vim- vimext))
; for newer versions (require (prefix-in vim- 'vimext))
(vim-set-buff-line 1 "This is line #1")
(vim-beep)
EOF
endfunction
nmap <F9> :call <SID>SetFirstLine() <CR>
File execution:
:mzfile supascript.scm
Vim exception handling:
:mz << EOF
(require (prefix vim- vimext))
; for newer versions (require (prefix-in vim- 'vimext))
(with-handlers
([exn:vim? (lambda (e) (display (exn-message e)))])
(vim-eval "nonsense-string"))
EOF
Auto-instantiation of vimext module (can be placed in your vimrc):
function! MzRequire()
:redir => l:mzversion
:mz (version)
:redir END
if strpart(l:mzversion, 1, 1) < "4"
" MzScheme versions < 4.x:
:mz (require (prefix vim- vimext))
else
" newer versions:
:mz (require (prefix-in vim- 'vimext))
endif
endfunction
if has("mzscheme")
silent call MzRequire()
endif
==============================================================================
3. Threads mzscheme-threadsLINK
The MzScheme interface supports threads. They are independent from OS threads,
thus scheduling is required. The option 'mzquantum' determines how often
Vim should poll for available MzScheme threads.
NOTE
Thread scheduling in the console version of Vim is less reliable than in the
GUI version.
==============================================================================
4. Vim access from MzScheme mzscheme-vimLINK
mzscheme-vimextLINK
The 'vimext' module provides access to procedures defined in the MzScheme
interface.
Common
------
(command {command-string}) Perform the vim ":Ex" style command.
(eval {expr-string}) Evaluate the vim expression into
respective MzScheme object: Lists are
represented as Scheme lists,
Dictionaries as hash tables,
Funcrefs as functions (see also
NOTE the name clashes with MzScheme eval,
use module qualifiers to overcome this.
(range-start) Start/End of the range passed with
(range-end) the Scheme command.
(beep) beep
(get-option {option-name} [buffer-or-window]) Get Vim option value (either
local or global, see set-option).
(set-option {string} [buffer-or-window])
Set a Vim option. String must have option
setting form (like optname=optval, or
optname+=optval, etc.) When called with
{buffer} or {window} the local option will
be set. The symbol 'global can be passed
as {buffer-or-window}. Then :setglobal
will be used.
Buffers mzscheme-bufferLINK
-------
(buff? {object}) Is object a buffer?
(buff-valid? {object}) Is object a valid buffer? (i.e.
corresponds to the real Vim buffer)
(get-buff-line {linenr} [buffer])
Get line from a buffer.
(set-buff-line {linenr} {string} [buffer])
Set a line in a buffer. If {string} is #f,
the line gets deleted. The [buffer]
argument is optional. If omitted, the
current buffer will be used.
(get-buff-line-list {start} {end} [buffer])
Get a list of lines in a buffer. {Start}
and {end} are 1-based and inclusive.
(set-buff-line-list {start} {end} {string-list} [buffer])
Set a list of lines in a buffer. If
string-list is #f or null, the lines get
deleted. If a list is shorter than
{end}-{start} the remaining lines will
be deleted.
(get-buff-name [buffer]) Get a buffer's text name.
(get-buff-num [buffer]) Get a buffer's number.
(get-buff-size [buffer]) Get buffer line count.
(insert-buff-line-list {linenr} {string/string-list} [buffer])
Insert a list of lines into a buffer after
{linenr}. If {linenr} is 0, lines will be
inserted at start.
(curr-buff) Get the current buffer. Use other MzScheme
interface procedures to change it.
(buff-count) Get count of total buffers in the editor.
(get-next-buff [buffer]) Get next buffer.
(get-prev-buff [buffer]) Get previous buffer. Return #f when there
are no more buffers.
(open-buff {filename}) Open a new buffer (for file "name")
(get-buff-by-name {buffername}) Get a buffer by its filename or #f
if there is no such buffer.
(get-buff-by-num {buffernum}) Get a buffer by its number (return #f if
there is no buffer with this number).
Windows mzscheme-windowLINK
------
(win? {object}) Is object a window?
(win-valid? {object}) Is object a valid window (i.e. corresponds
to the real Vim window)?
(curr-win) Get the current window.
(win-count) Get count of windows.
(get-win-num [window]) Get window number.
(get-win-by-num {windownum}) Get window by its number.
(get-win-buffer [window]) Get the buffer for a given window.
(get-win-height [window])
(set-win-height {height} [window]) Get/Set height of window.
(get-win-width [window])
(set-win-width {width} [window])Get/Set width of window.
(get-win-list [buffer]) Get list of windows for a buffer.
(get-cursor [window]) Get cursor position in a window as
a pair (linenr . column).
(set-cursor (line . col) [window]) Set cursor position.
==============================================================================
5. mzeval() Vim function mzscheme-mzevalLINK
To facilitate bi-directional interface, you can use mzeval() function to
evaluate MzScheme expressions and pass their values to VimL.
==============================================================================
6. Using Function references mzscheme-funcrefLINK
MzScheme interface allows use of Funcrefs so you can call Vim functions
directly from Scheme. For instance:
function! MyAdd2(arg)
return a:arg + 2
endfunction
mz (define f2 (vim-eval "function(\"MyAdd2\")"))
mz (f2 7)
or :
:mz (define indent (vim-eval "function('indent')"))
" return Vim indent for line 12
:mz (indent 12)
==============================================================================
7. Dynamic loading mzscheme-dynamic E815LINK
On MS-Windows the MzScheme libraries can be loaded dynamically. The :version
output then includes +mzscheme/dyn.
This means that Vim will search for the MzScheme DLL files only when needed.
When you don't use the MzScheme interface you don't need them, thus you can
use Vim without these DLL files.
To use the MzScheme interface the MzScheme DLLs must be in your search path.
In a console window type "path" to see what directories are used.
The names of the DLLs must match the MzScheme version Vim was compiled with.
For MzScheme version 209 they will be "libmzsch209_000.dll" and
"libmzgc209_000.dll". To know for sure look at the output of the ":version"
command, look for -DDYNAMIC_MZSCH_DLL="something" and
-DDYNAMIC_MZGC_DLL="something" in the "Compilation" info.
======================================================================
vim:tw=78:ts=8:sts=4:ft=help:norl: