Discovered pattern that ideally parses any quoting. Brackets highlighting in FSH.

[Sebastian Gniazdowski <sgniazdowski@xxxxxxxxx>]

Hello,
not only (z) can handle quoting, turns out regular pattern with while
loop can do it too:

    while [[ $_mybuf = (#b)[^"{}()[]\\\"'"]#((["({[]})\"'"])|[\\](*))(*) ]]; do
        [[ -n "${match[3]}" ]] && {
            __idx+=${mbegin[1]}+1
            _mybuf="${match[3]:1}" # also skip 1 quoted char
        } || {

the main point is [\\](*). Parentheses are placed in ${match[3]} and
allow to restart processing skipping e.g. a quoted backslash.

The rest is matching braces – it's an example from
Fast-Syntax-Highlighting, it now has ideal brackets highlighting – AND
ALSO ", '. Simple handling of those two quotings allows to switch mode
"in quoting" "outside quoting". That's all. The effect:

https://raw.githubusercontent.com/zdharma/fast-syntax-highlighting/master/images/brackets.gif

-- 
Sebastian Gniazdowski
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