Handle formatting of bibliography items into BibTeX strings

Use within the outer braces of a BibTeX entry, to capture a single key-value
field pair and consume the following comma and whitespace, if any.

Read the RHS of a field-value field pair, as a string

Capture inter-entry content in BibTeX, returning a Gloss record

Captures a single line of interlinear comments,
i.e., whatever is not a Reference,
returning a sequence of characters

Capture any valid bibtex item, potentially preceded by whitespace

Consume one or more digits and return a string in TeX syntax (in curly braces)

Reads a single bibliography item from the BibTeX reader

Read input to the end, returning all bibliography items.

Reads one bibliography item from the BibTeX string

Capture a single BibTeX entry, returning a Reference record

Read a simple string literal and convert to TeX syntax

Match any BibTeX-valid naked identifier, like pubtype, citekey, or field key,
i.e., a contiguous string of anything but whitespace, commas, and end braces.

Write BibTeX-formatted output to a java.io.Writer.

Convert bibliography item into BibTeX-formatted string