Build fails if [source-]highlight not found
If neither source-highlight
nor highlight
is found, the meson build fails with
gtkdoc/meson.build:9:10: ERROR: Argument not a list.
This is the result of highlight_prg_args
in meson.build
being initialized
to an empty string, when it should have been an empty list.
highlight_prg_args = ''
should be highlight_prg_args = []
.