for-GET/core-pegjs — pull request #22 by joseph-onsip (2014-11-06 23:55:32+00:00)
Title: src/ietf/rfc5234-core-abnf.pegjs: make HEXDIG strings case-insensitive

See http://tools.ietf.org/html/rfc5234#page-5:

```
ABNF permits the specification of literal text strings directly,
enclosed in quotation marks. Hence:

command = "command string"

Literal text strings are interpreted as a concatenated set of
printable characters.

NOTE:

ABNF strings are case insensitive and the character set for these
strings is US-ASCII.

Hence:

rulename = "abc"

and:

rulename = "aBc"

will match "abc", "Abc", "aBc", "abC", "ABc", "aBC", "AbC", and
"ABC".
```