Add `startCharacter` to some delimiter syntaxes

[chenzhiguang]

I forgot to add them when I created these syntaxes.

benchmark before

benchmark after

[coveralls]

Pull Request Test Coverage Report for Build 3425185302

• 2 of 2 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.004%) to 94.884%

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Totals
Change from base Build 3421314117:	0.004%
Covered Lines:	1224
Relevant Lines:	1290

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💛 - Coveralls

[srawlins]

Thanks!