Optimize println()
overloads added in P3142R0
#4672
+181
−2
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Fixes #4630.
__std_print_newline_only_to_unicode_console
to the import library to avoid potential branches aroundWriteConsoleW
.sputc
for non-Unicode new line printing forostream
to reduce potential branches.fputc
for non-Unicode new line printing forFILE*
as the function seems to be the simplest for the purpose in UCRT.