Version 1.7.5

• There is now special handling of repeated zero-length matches to avoid
  infinite loops. Specifically, a zero-length match is no longer allowed at the
  same offset in the string as the last zero-length match; if there is no
  non-empty match available, the starting offset is first advanced by one
  character.

Version 1.7.4

• Named groups would not be propagated to match matrices unless the regex was
  pre-compiled using ore(). This has been corrected.
• A compiler warning about a printf-type format specification has been
  resolved.

Version 1.7.3

• The package will now properly detect a plain locale like "UTF-8" on start-up.
• C prototype warnings have been resolved, and the problematic sprintf()
  function is now avoided.

Version 1.7.2

• A handful of small memory leaks have been plugged.
• The README has been updated to detail the current divergence between CRAN
  and mainline versions of the package.

Version 1.7.1

• The binary argument to ore_file() is now stored in an attribute in its
  return value. The ore_search() function additionally uses this attribute
  to determine whether or not to set the text element of its return value.
  Treating a binary file's entire contents as a string is unwise, and may
  include embedded nuls and other problem bytes.
• A minor tweak has been made to the es() function, which appreciably
  improves its performance in simple cases.
• A potential buffer overrun and protection bug have both been corrected.

Version 1.7.0

• The Onigmo library has been updated to version 6.2.0.
• R connections are now supported as text sources, allowing URLs, gzipped files
  and pipes (amongst others; see ?connections) to be straightforwardly
  interfaced with the package. The package's C backend has been substantially
  refactored to support files and connections in all the core functions.
• The new ore_switch() function selects between a number of possible outputs
  by matching each element of its input against a series of regular
  expressions. This can be a useful way to handle different possible forms of
  the same information.
• The new ore_repl() function is a relative of the existing ore_subst(),
  but differs in how it is vectorised. Unlike ore_subst(), it will replicate
  the source text if necessary to ensure that all specified replacements are
  used. The es() function now uses ore_repl(), and so can produce output
  vectors longer than its input.
• ore_subst() gains a "start" argument, like ore_search(), and now accepts
  multiple replacements, which will be applied in sequence to different
  matches.
• ore_match() is a new alias of ore_search().
• Substitution group references can now include "\0" for the whole match
  string, and allow for group numbers higher than 9. Group numbers that are out
  of range should now produce an error, rather than potentially leading to a
  segfault. Named group references should also be more robust.
• A multilingual, multiscript dataset, "glass", is now included with the
  package thanks to Frank da Cruz and many contributors.
• Names and NA values are now propagated from text arguments that are
  character vectors.
• There is a new option (ore.keepNA) to propagate NAs in ore_ismatch(),
  and the infix functions %~% and %~~%, rather than convert them
  implicitly to FALSE. This is off by default for backwards compatibility.
• Printing has been improved, and in particular "orematches" objects now show
  (just) the elements that matched.
• Underscore-separated names are now used in preference in the package
  documentation, following the trend in other packages, but the period-
  separated versions are still available.
• Detection of the platform's native encoding has been improved, and this will
  be asserted in regular expressions created by ore(), rather than them being
  marked as being in "unknown" encoding by default as before. Handling of
  encodings has been refined elsewhere too.