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General comment in ChangeLog

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Jay Berkenbilt 2018-02-04 08:33:23 -05:00
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2018-02-04 Jay Berkenbilt <ejb@ql.org>
* Changes listed on today's date are numerous and reflect
significant enhancements to qpdf's lexical layer. While many
nuances are discussed and a handful of small bugs were fixed, it
should be emphasized that none of these issues have any impact on
any output or behavior of qpdf under "normal" operation. There are
some changes that have an effect on content stream normalization
as with qdf mode or on code that interacts with PDF files
lexically using QPDFTokenizer. There are no incompatible changes
for normal operation. There are a few changes that will affect the
exact error messages issued on certain bad files, and there is a
small non-compatible enhancement regarding the behavior of
manually constructed QPDFTokenizer::Token objects. Users of the
qpdf command line tool will see no changes other than the addition
of a new command-line flag and possibly some improved error
messages.
* Significant lexer (tokenizer) enhancements. These are changes to
the QPDFTokenizer class. These changes are of concern only to
people who are operating with PDF files at the lexical layer using