used with curly braces and quotes, as in "${var}".
Also ensure that command substitution is quoted, as in "$(command)", and
convert `command` to $(command).
Reviewed by agc
by scripts in distrib/sets/*. This is intended to be useful when cross
building. Only trivial commands like echo, cat, and rm are excluded
from this treatment.
While I am here, make ${MTREE} and ${DB} follow the pattern used by most
other such variables.
Reviewed by agc.
a new list:
sets.subr -- The set-listing code that is common to makeplist,
makeflist, and regpkg has moved here.
syspkgdeps -- Compute naive dependencies for system packages based
on directory containment. I.e., if package A contains
path /p/q, and package B contains path /p, then B is
considered a dependency of A. As Jim Wise remarks,
this is not quite right: system-package dependencies
should indicate a functional dependency. Nevertheless,
these naive dependencies protect us from orphaning
files when pkg_delete'ing system packages.
culldeps -- Helper for syspkgdeps. Removes redundant dependencies
from a dependencies table. Essentially does the opposite
of a transitive closure on a dependencies table: if
the table contains A depends-on B, B depends-on C, and
A depends-on C, then A depends-on C is removed because
it can be derived from the prior two dependencies.
deps -- Dependencies computed by syspkgdeps.
