- Support for base >= 4.15 / GHC 9.
- Dropped support for GHC versions that have no corresponding HLS version.
- New
%Qand%qformat specifiers accept strict and lazy Text as input respectively. Otherwise they function identically to the%sspecifier. - th-printf can now produce lazy Text as well as String, and the improved
internal representation of format strings should slightly increase performance.
- Directly producing Text should now be significantly faster than using the
string formatter and
packing the result, especially with Text format arguments.
- Directly producing Text should now be significantly faster than using the
string formatter and
- Dropped support for GHC < 8.
Backported new backpack-based code to pre GHC-8.4 versions.
- Rename of public modules
- Parser rewrite
- th-printf now prints a warning when given an erroneous format string
- Several printf behaviors have been updated to comply with spec:
x,u, etc. specifiers now only apply to positive integers- Length specifiers are allowed
- Generated testsuite covers more cases