v0.20.2 - 2019-07-17

Changes affecting backwards compatibility

All strutils.rfind procs now take start and last like strutils.find with the same data slice/index meaning. This is backwards compatible for calls not changing the rfind start parameter from its default. (#11487)

In the unlikely case that you were using rfind X, start=N, or rfind X, N, then you need to change that to rfind X, last=N or rfind X, 0, N. (This should minimize gotchas porting code from other languages like Python or C++.)

On Windows stderr/stdout/stdin are not opened as binary files anymore. Use the switch -d:nimBinaryStdFiles for a transition period.

Breaking changes in the standard library

Mac OS X / BSD: TSa_Family is now the uint8 type, so type conversions like x.sin_family = uint16 toInt(nativesockets.AF_INET) need to be changed into x.sin_family = TSa_Family toInt(nativesockets.AF_INET).

Breaking changes in the compiler

Library additions

toOpenArray is now available for the JS target.

Library changes

Fix async IO operations stalling even after socket is closed. (#11232)
More informative error message for streams.openFileStream. (#11438)

Language additions

Language changes

Tool changes

Compiler changes

Better error message for IndexError for empty containers. (#11476)
Fix regression in semfold for old right shift. (#11477)
Fix for passing tuples as static params to macros. (#11423)

Bugfixes