Merge commit '10a394ae' into lang/i18n-data-fill

changes/i18n-fill-nested.md

@@ -0,0 +1,9 @@
+bump: patch
+type: fix
+**Text keys below a row, padding, and `tr`'s cast.** A `@Text Key` in a record nested in a registry
+row (and in each item of a list of them) is filled with its derived key, `<registry>.<row>.<field>.<i>.<field>`,
+as a top-level one is, and a `@Text []Key` a row leaves out takes `<...>.0`, `.1`, ... for as many as
+the source `.po` has - so no `.lres` spells a key. `field: null` is no text. `trf` / `trn`'s trailing
+`""` arguments are padding and not counted against the English's holes. And `string(x)` of a string or
+a `Key` is no allocation to the escape analysis: it is `x` itself, so a `tr(key)` that returns it
+passes `arena strict` (a template's lone hole still copies).

changes/test-handler-rt-init.md

@@ -0,0 +1,6 @@
+bump: patch
+type: fix
+**A test program may hold a phase handler.** A program with `test` blocks and a `handler ... phase`
+(its own, or one a module it imports declares) failed to compile with LLVM's "use of undefined value
+'@rt_init'": the test runner called the runtime's `rt_init` whenever the program had systems, and a
+handler alone makes none. It now calls it only when it exists, as an `entry` program's `main` does.