Improve word parser.

Teodor Sigaev <teodor@sigaev.ru>

Commit: 4f94b49a318c1130e1c9fe82eca2ad4a894604f0
Author: Teodor Sigaev <teodor@sigaev.ru>
Date: 2005-12-07T13:12:54Z
Releases: 8.2.0
Improve word parser.
 - allow ~ in filenames
 - -8.2.1 now is '-' and '8.2.1' instead of '-8.2' '.' '3'
 - '.text' now is not a file

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