<commit_before># librsync NEWS

## librsync 2.2.2

NOT RELEASED YET

## librsync 2.2.1

Released 2019-10-16

 * Fix #176 hangs calculating deltas for files larger than 4GB. (dbaarda,
   https://github.com/librsync/librsync/pull/177)

## librsync 2.2.0

Released 2019-10-12

 * Bump minor version from 2.1.0 to 2.2.0 to reflect additional RabinKarp
   rollsum support.

 * Fix MSVC builds by adding missing LIBRSYNC_EXPORT to variables in
   librsync.h, add -DLIBRSYNC_STATIC_DEFINE to the sumset_test target,
   and correctly install .dll files in the bin directory.
   (adsun701, https://github.com/librsync/librsync/pull/161)

 * Add RabinKarp rollsum support and make it the default. RabinKarp is a much
   better rolling hash, which reduces the risk of hash collision corruption
   and speeds up delta calculations. The rdiff cmd gets a new `-R
   (rollsum|rabinkarp)` argument with the default being `rabinkarp`, Use `-R
   rollsum` to generate backwards-compatible signatures. (dbaarda,
   https://github.com/librsync/librsync/issues/3)

 * Use single-byte literal commands for small inserts in deltas. This makes
   each small insert use 1 less byte in deltas. (dbaarda,<commit_msg>Update NEWS.md with recent changes.<commit_after># librsync NEWS

## librsync 2.2.2

NOT RELEASED YET

 * Improved C99 compatibility. Add `-std=c99 -pedantic` to `CMAKE_C_FLAGS` for
   gcc and clang. Fix all C99 warnings by making all code C99 compliant. Tidy
   all CMake checks, #cmakedefines, and #includes. (texierp, dbaarda,
   https://github.com/librsync/librsync/pull/181,
   https://github.com/librsync/librsync/pull/182)

 * Usage clarified in rdiff (1) man page. (AaronM04,
   https://github.com/librsync/librsync/pull/180)

## librsync 2.2.1

Released 2019-10-16

 * Fix #176 hangs calculating deltas for files larger than 4GB. (dbaarda,
   https://github.com/librsync/librsync/pull/177)

## librsync 2.2.0

Released 2019-10-12

 * Bump minor version from 2.1.0 to 2.2.0 to reflect additional RabinKarp
   rollsum support.

 * Fix MSVC builds by adding missing LIBRSYNC_EXPORT to variables in
   librsync.h, add -DLIBRSYNC_STATIC_DEFINE to the sumset_test target,
   and correctly install .dll files in the bin directory.
   (adsun701, https://github.com/librsync/librsync/pull/161)

 * Add RabinKarp rollsum support and make it the default. RabinKarp is a much
   better rolling hash, which reduces the risk of hash collision corruption
   and speeds up delta calculations. The rdiff cmd gets a new `-R
   (rollsum|rabinkarp)` argument with the default being `rabinkarp`, Use `-R
   rollsum` to generate backwards-compatible signatures. (dbaarda,
   https://github.com/librsync/librsync/issues/3)

 * Use single-byte literal commands for small inserts in deltas. This makes
   each small insert use 1 less byte in deltas. (dbaarda,
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