win32: enable legacy I/O mode to fix missing pager output on Windows with py3...
win32: enable legacy I/O mode to fix missing pager output on Windows with py3
The equivalent interpreter option is set by wrapper.exe, but this *.bat file is
what gets installed in a venv. Without this mode, any command that spins up a
pager has no output, unless the pager is explicitly disabled. The variable is
set inside the `setlocal` scope to keep it from leaking into the environment
after the bat file exits.
We should probably still figure out how to ship a compiled hg.exe when
installing with `pip`, because the binary does other things like enable long
filename support. But this avoids the dangerous and confusing lack of output in
the meantime.
Differential Revision:
https://phab.mercurial-scm.org/D10354
