Follow-up Comment #4, bug #64906 (project groff):
The patch in comment #2 changing only the case of "host" suggests the all-caps
spelling may have been used when a coder was misled by the reportedly (in bug
#64913) incorrect casing of that variable's documentation in Makefile.am.
In my latest groff build (a few months old, but I don't think the build system
has changed significantly if at all), the entirety of the charset.alias file
is:
# This file contains a table of character encoding aliases,
# suitable for operating system ''.
# It was automatically generated from config.charset.
# Packages using this file:
So clearly something is going wrong, the operating system string being left
empty. Tellingly, on my system the environment variable $HOST is undefined,
suggesting that the make rule building charset.alias is using environment
variable $HOST where it means to use make variable $host.
The comment #1 paragraph about localcharset replacing config.charset strikes
me as a separate issue.
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