Tokenize the input.
A LaTeXML::Core::Mouth (and subclasses) is responsible for tokenizing, ie. converting plain text and strings into LaTeXML::Core::Tokens according to the current category codes (catcodes) stored in the LaTeXML::Core::State.
It extends LaTeXML::Common::Object.
Creates a new Mouth of the appropriate class for reading from $source.
Creates a new Mouth reading from $string.
Returns the next LaTeXML::Core::Token from the source.
Returns whether there is more data to read.
Return a description of current position in the source, for reporting errors.
Reads tokens until one matches $until (comparing the character, but not catcode). This is useful for the verb command.
Reads a raw (untokenized) line from $mouth, or undef if none is found.