author

- Kaarel Kaljurand

- Tobias Kuhn

version

- 2009-04-29

Note: SWI has char_type/2 which could be used instead of the predicates defined in this module. But Sicstus does not seem to have anything similar. Note also: char_type/2 does not seem to be good because it does not handle anything beyond ASCII-7.

 is_capitalized(+Token:atom) is semidet

Succeeds if Token starts with an uppercase letter.

Arguments:

Token

- is an ACE token

 is_digit(+Code:integer) is semidet

Succeeds if Code corresponds to an ASCII-7 digit symbol.

Arguments:

Code	- is a character code

 is_lowercase(+Code:integer) is semidet

Succeeds iff Code corresponds to a lowercase letter.

Arguments:

Code	- is a character code We also test lowercase letters from the upper half of latin1.

 is_uppercase(+Code:integer) is semidet

Succeeds iff Code corresponds to an uppercase letter.

Arguments:

Code	- is a character code We also test uppercase letters from the upper half of latin1.

 is_letter(+Code:integer) is semidet

Succeeds iff Code corresponds to a lower- or uppercase letter.

Arguments:

Code	- is a character code

 is_unused(+Code:integer) is semidet

Succeeds iff Code corresponds to an unused character according to http://www.w3.org/MarkUp/html3/latin1.html In addition: tab, linefeed.

Arguments:

Code	- is a character code

 is_sentence_end_symbol(?Token:atom) is semidet

Tests if Token is an ACE sentence end symbol.

Arguments:

Token

- is a token.

Undocumented predicates

The following predicates are exported, but not or incorrectly documented.

 to_lowercase(Arg1, Arg2)