syn region htmlBoldItalic start="___\ze\S" end="\S\zs___" keepend
else
" single-line emphasis (emphasis only works with closing token on the same line)
- " the following character makes the match non-greedy: vv
- syn region htmlItalic start="\%(^\|\s\)\zs\*\ze[^\\\*\t ]\([^\n\*]*[^\\\*\t ]\)\?\*" end="[^\\\*\t ]\zs\*\ze\_W" keepend
- syn region htmlItalic start="\%(^\|\s\)\zs_\ze[^\\_\t ]\([^\n_]*[^\\_\t ]\)\?_" end="[^\\_\t ]\zs_\ze\_W" keepend
- syn region htmlBold start="\*\*\ze\S\([^\n\*]*[^\\\*\t ]\)\?\*\*" end="\S\zs\*\*" keepend
- syn region htmlBold start="__\ze\S\([^\n_]*[^\\_\t ]\)\?__" end="\S\zs__" keepend
- syn region htmlBold start="\*\*\*\ze\S\([^\n\*]*[^\\\*\t ]\)\?\*\*\*" end="\S\zs\*\*\*" keepend
- syn region htmlBold start="___\ze\S\([^\n_]*[^\\_\t ]\)\?___" end="\S\zs___" keepend
+ syn region htmlItalic start="\%(^\|\s\)\zs\*\ze[^\\\*\t ]\([^\n]*[^\\\*\t ]\)\?\*" end="[^\\\*\t ]\zs\*\ze\_W" keepend
+ syn region htmlItalic start="\%(^\|\s\)\zs_\ze[^\\_\t ]\([^\n]*[^\\_\t ]\)\?_" end="[^\\_\t ]\zs_\ze\_W" keepend
+ syn region htmlBold start="\*\*\ze\S\([^\n]*[^\\\*\t ]\)\?\*\*" end="\S\zs\*\*" keepend
+ syn region htmlBold start="__\ze\S\([^\n]*[^\\_\t ]\)\?__" end="\S\zs__" keepend
+ syn region htmlBold start="\*\*\*\ze\S\([^\n]*[^\\\*\t ]\)\?\*\*\*" end="\S\zs\*\*\*" keepend
+ syn region htmlBold start="___\ze\S\([^\n]*[^\\_\t ]\)\?___" end="\S\zs___" keepend
endif
" [link](URL) | [link][id] | [link][] | ![image](URL)