original commit from claudio@: Type-cast getpagesize() from int to size_t for the comparison with d. getpagesize() will only return positive numbers (there is no negative page size system) and it can not fail. Should fix some compiler warnings seen in -portable projects. OK otto@ (plus readding back the RCS id)

original commit from claudio@: Make imsg.h a bit more self-contained by prototyping struct iovec. OK martijn@ mvs@ deraadt@

reduces the diff with /usr/src. (scan_scaled was updated since the initial import of fmt_scaled, hence the file revision bump.)

original commit from eric@: change the barrier so that fd's are always passed and received with the first byte of the imsg they belong to. idea, tweaks and ok claudio@

instead of trying to match the given string as-is, split it into tokens (space-separated words) and try to match those. This allows to match out of order, for example "mir vid" will match gemini://vidage.rocks/blog/parliamo-di-mirror.gmi

The issue with building out-of-tree was that some pages were generated by autoconf in $(builddir) and others were as-in in $(srcdir). While it was possible to use the right combination of $(builddir)/$(srcdir), just move everything as .in and generate every page during the configure step.

Persist a generalized history of visited URL in history_file and try to keep it in sync during telescope usage and shutdown.