_zsh_highlight_add_highlight appends to region_highlight $1 $2 and the
next non-null parameter. If there is no non-null parameter, do nothing,
This is so that highlighters can add a style with fallbacks if the most
specific style is not defined. If none of the applicable styles are
defined, do the right thing and don't add an invalid entry to
region_highlight.
The pattern highlighter doesn't use this function as it'd need too large
of an API change.
That allows tests to be completely independent of each other, so tests that
change global state — such as modify environment variables, define functions or
aliases, or hash commands — will not affect other tests, without needing an
explicit cleanup step.
This enables testing path-tilde-home with and without $HOME set, which is part
of issue #216.
While at it, convert the test harness to TAP. This fixes issue #180 by adding
support for "not ok 42 # TODO" output.
This commit assumes that 'grep' supports POSIX-compliant -q and -v flags.
Patch-by: Matthew Martin <phy1729@gmail.com>
Matthew Martin