Specific character combination not rendered correctly

[daneah]

Marked version: 0.3.19

Markdown flavor: n/a

Expectation

marked('_in_') would be rendered as <p><em>in</em></p>.

Result

marked('_in_') is rendered as <p>_in_</p>.

What was attempted

marked('_in_')

Other combinations of marked('_some string_') appear to work as expected (certainly didn't run an exhaustive check).

[UziTech]

looks like it has to do with the number of characters in between the underscores.

I'm tagging in @Feder1co5oave. Is there any reason <= 2 characters between underscores is not rendered inside <em>?

[daneah]

Oh jeez, sorry I missed that obvious generalization of the nature of the bug. Just tried out other one/two character combos and I concur that's the issue. Thanks @UziTech !