merge: a flat INI overlay front end

A convenience format for simple local calendars, transpiled to the existing
S-expression form and verified against it before emitting.

1 files changed, 19 insertions, 0 deletions

diff --git a/test/cli.t b/test/cli.t
index d735e69..d981d88 100644
--- a/test/cli.t
+++ b/test/cli.t
@@ -373,3 +373,22 @@ to empty and to the overlay's own id:
   tiny.sexp: ok -- overlay tiny, 1 directive(s): 1 add, 0 suppress, 0 replace, 0 edit
     every directive found its target
     add      tiny-feast
+
+`convert` turns the flat INI form into the S-expression one and verifies its
+own output before emitting it. The full pipeline, INI to a resolved day:
+
+  $ printf '[overlay]\nid = my-parish\n[our-patron]\ndate = 07-11\nrank = class-3\ncolour = white\nname.en = St Example\n' > p.ini
+  $ colitur convert p.ini > p.sexp
+  $ colitur check p.sexp
+  p.sexp: ok -- overlay my-parish, 1 directive(s): 1 add, 0 suppress, 0 replace, 0 edit
+    every directive found its target
+    add      our-patron
+  $ colitur day 2026 --overlay p.sexp | grep '^2026-07-11'
+  2026-07-11 saturday time-after-pentecost 6 our-patron class-3 white +pius-i
+
+What the INI form cannot express is refused by name, not dropped silently:
+
+  $ printf '[overlay]\nid = x\n[y]\nreplace = yes\n' > r.ini
+  $ colitur convert r.ini
+  colitur: r.ini: section [y]: replace is not expressible in the INI form -- it needs a whole entry, which is what the S-expression form is for (see colitur-overlay(5)). Suppress plus a fresh section is usually what you want instead.
+  [2]