[advice] Change conceal regular expression

[Freed-Wu]

In https://hub.fastgit.org/lervag/vimtex/blob/master/autoload/vimtex/syntax/core.vim#L1376

syntax match texMathSymbol "\\sum\>"               contained conceal cchar=∑

"\\sum\>" is too strict, it cannot match \sum_{i = 1}^n or \sum^n_{i = 1}

How about change it to "\\sum\ze\(\>\|_\|\^\)"?

Other operators are similar.

Thanks!

[lervag]

Other operators are similar.

You're right. But I'm not sure it makes sense to change all operators. Would you mind proposing a set of the relevant operators? Or do you think it would be better to simply change all related regexes?

[Freed-Wu]

In my opinion, I believe it should not have any side effect. However, if it results in any bug for some operators, we can treat these operators specially.

[lervag]

I've updated this now. I think it should work as expected in most or all cases now, but please test and report any errors.