String highlighting edit:
Code:
<dict>
<key>begin</key>
<string>"</string>
<key>patterns</key>
<array>
<dict>
<key>name</key>
<string>constant.other.placeholder.SourcePawn</string>
<key>match</key>
<string>%(d|\d*\.*\d*f|i|s|L|N|t|T|u|x|X)</string>
</dict>
<dict>
<key>name</key>
<string>constant.character.escape.SourcePawn</string>
<key>match</key>
<string>(\\x0\d|\\n)</string>
</dict>
</array>
<key>end</key>
<string>"</string>
<key>name</key>
<string>string.SourcePawn</string>
</dict>