Vim support for Julia.
Julia support for Vim.
The full documentation is available from Vim: after installation, you just need to type
:help julia-vim.
The remainder of this README will only give an overview of some of the features:
This plug-in adds some functionality to substitute LaTeX code sequences (e.g.
\alpha) with corresponding Unicode symbols (e.g.
α). By default, these substitutions must be triggered explicitly by pressing the Tab key, as in the Julia command line (the REPL); however, an automatic, as-you-type mode can also be activated, and a method based on keymap is also available.
This feature also works in command mode, e.g. when searching the files with the
/or
?commands, but the as-you-type mode is not available (the keymap-based version works though, and it also works with some Vim commands like
fand
t).
By default, this feature is only active when editing Julia files. However, it can be also enabled with other file types, and even turned on/off on the fly regardless of the file type.
These features only work as described with Vim version 7.4 or higher. Tab completion can still be made available on lower Vim versions, see below for more details.
The following sections provide details on these features. The complete documentation is provided by calling
:help julia-vimfrom within Vim. A complete reference table of the available substitution can be accessed by calling
:help L2U-reffrom within Vim.
This plug-in adds a mapping to the Tab key which makes it behave like the Julia REPL, i.e. when the cursor is at the end of a recognized LaTeX symbol (e.g.
\alpha) in insert mode, pressing the Tab key will substitute it with the corresponding Unicode symbol (e.g.
α). If a partial match is found (e.g.
\al), a list of possible completions is suggested (e.g.
\aleph,
\allequal,
\alpha), and it will be refined while you enter more characters; when only one match is left, pressing Tab will complete it and pressing it again will perform the substitution to Unicode.
If no suitable substitution is found, the action will fall back to whatever mapping was previously defined: by default, inserting a literal
character, or invoking some other action if another plug-in is installed, e.g. supertab or YouCompleteMe.Note that the YouCompleteMe, neocomplcache, neocomplete and deoplete plug-ins do not work well with the suggestion of possible completions for partial matches, and therefore this feature is disabled if those plug-ins are detected.
A literal tab can always be forced by using CTRL-V and then Tab.
On the Vim command line, e.g. when searching the file with the
/or
?commands, the feature is also activated by Tab, but falls-back to the Vim built-in behavior if no suitable substitution is found: if you had defined a mapping for Tab in command mode, it will be overridden. This can be prevented by choosing a different value for the mapping keys, see the full documentation.
To disable this mapping, you can use the command
:let g:latex_to_unicode_tab = 0, e.g. by putting it into your
.vimrcfile. You can also change this setting from the Vim command-line, but you will also need to give the command
:call LaTeXtoUnicode#Init()for the change to take effect.
Even when the mapping is disabled, the feature is still available (in insert mode) via the omnicompletion mechanism, i.e. by pressing CTRL-X and then CTRL-O.
To disable the suggestions of partial matches completions, use the command
:let g:latex_to_unicode_suggestions = 0.
In general, suggestions try not to get in the way, and so if an exact match is detected (e.g.
\ne) when Tab is pressed, the substitution will be done even when there would be other symbols with the same prefix (e.g.
\neg). This behaviour can be changed by the command
:let g:latex_to_unicode_eager = 0, in which case hitting Tab will first produce a suggestion list, and only pressing it again will trigger the substitution to Unicode.
The automatic remapping of the Tab key is not performed if Vim version is lower than 7.4. However, the functionality can still be used via the omnicompletion mechanism, i.e. by using CTRL-XCTRL-O. You can map this to some more convenient key combination, e.g. you may want to add something like this line to your
.vimrcfile:
inoremap
This would map the functionality to CTRL-Tab. However, if you try to map this to Tab, you'd only be able to use literal Tab by using CTRL-VTab.
An automatic substitution mode can be activated by using the command
:let g:latex_to_unicode_auto = 1, e.g. by putting it into your
.vimrcfile. You can also change this setting from the Vim command-line, but you will also need to give the command
:call LaTeXtoUnicode#Init()for the change to take effect.
In this mode, symbols will be substituted as you type, as soon as some extra character appears after the symbol and a LaTeX sequence can unambiguously be identified.
For example, if you type
a \ne bthe
\newill be changed to
≠right after the space, before you input the
b.
This does not interfere with the Tab mapping discussed above. It only works in insert mode, and it doesn't work with emojis.
This feature is not available with Vim versions lower then 7.4.
A different susbstitution mode based on keymaps can be activated with
:let g:latex_to_unicode_keymap = 1, e.g. by putting it into your
.vimrcfile. This works similarly to the as-you-type method described above, but it has the advantage that it works under more circumstances, e.g. in command-line mode when searching with
/or
?, and when using the
fand
tcommands. The main disadvantage is that you don't see the whole sequence as you're typing it, and you can't fix mistakes with backspace, for example. Another difference is that there is a timeout like for any other mapping. In any case, it is possible to use this method in parallel with the other two methods, they don't interfere. So if you have the Tab mapping (discussed above) activated, you still get to see completions and suggestions. If you have the as-you-type substitution active, and you make a mistake, you can simply press backspace and keep going, at least in insert mode, and so on.
This feature might with Vim versions lower then 7.4, but it hasn't been tested.
By default, the LaTeX-to-Unicode substitutions are only active when editing Julia files. However, you can use the variable
g:latex_to_unicode_file_typesto specify for which file types this feature is active by default. The variable must be set to a string containing a pattern (a regular expression) which matches the desired file types, or to a list of such patterns. For example, to activate the feature on all file types, you could put
let g:latex_to_unicode_file_types = ".*"in your
.vimrcfile. Be aware, however, that enabling the functionality overrides the
omnifuncsetting for that file type.
Regardless of the type of the file you are editing and of the
g:latex_to_unicode_file_typessetting, the LaTeX-to-Unicode substitutions can be enabled/disabled/toggled by calling the functions
LaTeXtoUnicode#Enable(),
LaTeXtoUnicode#Disable(),
LaTeXtoUnicode#Toggle(). For example, you could use the mappings:
noremap LaTeXtoUnicode#Toggle() noremap! LaTeXtoUnicode#Toggle()
and then use the F7 key to quickly turn the feature on and off.
This plug-in defines mappings to move around julia blocks (e.g.
if/end,
function/endetc.) and to manipulate them as a whole (analogously to the standard
w,
betc. commands to move on words, and to the
aw,
iwcommands which allow to manipulate them). These require the
matchitplugin, which is usually distributed with ViM but must be explicitly enabled, e.g. adding this to your
.vimrcfile:
runtime macros/matchit.vim
The default mappings use
]],
][,
[[,
[],
]j,
]J,
[j, and
[Jfor the movements and
aj,
ijfor the selections. These can be disabled collectively by setting
g:julia_blocksto
0, or they can be remapped and/or disabled individually by defining a
g:julia_blocks_mappingvariable. See the documentation for details.
Note that this feature requires Vim version 7.4 or higher.