The new m4manpages, m4webmanpages targets generate nroff and markdown
man pages via an alternate, excitingly complicated process, involving
shake, hakyll, pandoc *and* m4. Currently just the hledger man page is
processed this way, and the output (hledger/doc/m4-hledger.1,
site/m4-hledger.1.md) is equivalent to that of the non-m4 process.
Pro: selecting and massaging web/man content may be smoother with m4
than with pandoc filters. File inclusion allows documentation to be
broken up into chunks, which may be easier to edit, reorganize and
reuse. Macros could reduce boilerplate and enable more featureful and
attractive docs.
Con: the non-m4 process was simpler, easier to for contributors to
understand and working well enough. YAGNI.
