Kovid Goyal be1ff61e4a
Improve some utility functions
Make expandvars accept both $VARNAME and ${VARNAME} now matches
the behavior of posixpath.expandvars

Allow overriding the environment variables to_cmdline expands against
2020-09-18 13:25:59 +05:30
..
2020-09-18 13:25:59 +05:30