autocomplete+math mode.

[andresnmejiaa]

There are three issues that I have. The first is the functionality for automatic snippets (no tab complete) in ultisnips. For example:

snippet mk "Math" wA
$$1$
endsnippet

should not require tab-complete in vscode but it does.

The second issue is that if you use snippets without alphanumerical characters, vsnips does not register them. An example:

snippet ,, "ldots" iA
, \ldots, $0
endsnippet

The previous snippet will just not register.

The final issue is some of the python integration. The following is a very useful latex function:

global !p
texMathZones = ['texMathZone'+x for x in ['A', 'AS', 'B', 'BS', 'C', 'CS', 'D', 'DS', 'V', 'W', 'X', 'Y', 'Z']]
texMathZones += ['texMathZone'+x for x in ['E', 'ES', 'F', 'FS', 'G', 'GS', 'H', 'HS', 'I', 'IS', 'J', 'JS', 'K', 'KS', 'L', 'LS']]
texIgnoreMathZones = ['texMathText']
texMathZoneIds = vim.eval('map('+str(texMathZones)+", 'hlID(v:val)')")
texIgnoreMathZoneIds = vim.eval('map('+str(texIgnoreMathZones)+", 'hlID(v:val)')")
def isMath():
synstackids = vim.eval("synstack(line('.'), col('.') - (col('.')>=2 ? 1 : 0))")
if not set(texIgnoreMathZoneIds).isdisjoint(synstackids):
return False
return not set(texMathZoneIds).isdisjoint(synstackids)
def prose():
return not isMath()
regchars = '([\s\d",._=:$/()|{}[]\]|^)'
endglobal

Sorry for the bad formatting.

This does not register, and basically vsnips cannot tell the difference between mathmode and prose mode via these functions. In particular:

context "isMath()"
snippet abc "ldots" iA
, \ldots, $0
endsnippet

will just run whether I am in math mode or not.

Thank you for reading!

[corvofeng]

For example:

snippet mk "Math" wA
$$1$
endsnippet

should not require tab-complete in vscode but it does.

Well, Vsnips does not support options like 'wA' currently.

   w   Word boundary - With this option, the snippet is expanded if
       the tab trigger start matches a word boundary and the tab trigger end
       matches a word boundary. In other words the tab trigger must be
       preceded and followed by non-word characters. Word characters are
       defined by the 'iskeyword' setting. Use this option, for example, to
       permit expansion where the tab trigger follows punctuation without
       expanding suffixes of larger words.
   A   Snippet will be triggered automatically, when condition matches.
       See |UltiSnips-autotrigger| for more info.

Now that you have mentioned these options, I will start looking for some ways to support it.

[corvofeng]

The second issue is that if you use snippets without alphanumerical characters, vsnips does not register them. An example:

snippet ,, "ldots" iA
, \ldots, $0
endsnippet

The previous snippet will just not register.

Well, I have tested this code snippet in my vscode and I am sure that the code snippet is registered by vsnips. The reason it doesn't show up in the completion list is because vscode cannot handle prefixes like ,: correctly.

These options(iA) are also currently unavailable in this snippet.

[corvofeng]

The final issue is some of the python integration. The following is a very useful latex function:

global !p
texMathZones = ['texMathZone'+x for x in ['A', 'AS', 'B', 'BS', 'C', 'CS', 'D', 'DS', 'V', 'W', 'X', 'Y', 'Z']]
texMathZones += ['texMathZone'+x for x in ['E', 'ES', 'F', 'FS', 'G', 'GS', 'H', 'HS', 'I', 'IS', 'J', 'JS', 'K', 'KS', 'L', 'LS']]
texIgnoreMathZones = ['texMathText']
texMathZoneIds = vim.eval('map('+str(texMathZones)+", 'hlID(v:val)')")
texIgnoreMathZoneIds = vim.eval('map('+str(texIgnoreMathZones)+", 'hlID(v:val)')")
def isMath():
    synstackids = vim.eval("synstack(line('.'), col('.') - (col('.')>=2 ? 1 : 0))")
    if not set(texIgnoreMathZoneIds).isdisjoint(synstackids):
        return False
    return not set(texMathZoneIds).isdisjoint(synstackids)
def prose():
    return not isMath()
regchars = '([\s\d\",._=:\$\/\(\)\|\{\}\[\]\\]|^)'
endglobal

This does not register, and basically vsnips cannot tell the difference between mathmode and prose mode via these functions. In particular:

context "isMath()"
snippet abc "ldots" iA
, \\ldots, $0
endsnippet

Well, there are two questions on this issue.

Firstly, you want to use the python function in vsnips . I'm sorry that it will be not supported even in the future. For vsnips's user, I'd like to recommend to write JavaScripts function to do something Please refer to wiki: Vsnips 用户自定义js函数 or code examples.

Secondly, custom-context is not supported yet, and maybe I could find methods to support, but I cannot guarantee it. A good way to know the context is to write a JavaScript function to detect it.

[corvofeng]

Well, thanks for your issues, maybe next time you can split it into different issues and it will be easier to track.

[andresnmejiaa]

Thank you very much for your responses. I will be sure to split up questions next time!

[corvofeng]

Well, in Vsnips 0.4.1 the 'A'(auto trigger) option is supported, but it may be not recommended because it would damage the performance.

Now that this issue is open, I offer you a solution.

Firstly, you need to set Vsnips.EnableAutoTrigger to true.

{
    "Vsnips.EnableAutoTrigger": true
}

And as for auto-trigger options, you must contains the 'w' with 'A'. let me give you an example:

snippet ,, "ldots" iwA
, \ldots, $0
endsnippet

the option must be 'iwA'('iA' will not work).