odenwald/prototype, branch master

Fix two bugs in prototype parser

2026-02-26T18:29:18Z

1. Inner visit at span (0,1) yielded no sub-spans because visit(1, 0, 1, 1) iterates span from 1 to r-x=0, which is empty. This prevented unary rules like [S] ||| [X,1] from completing at the leftmost span, so S(0,1) was never created. Drop the x=1 parameter (default x=0); scan already handles bounds checking. 2. Self-filling step searched remaining_items for unary NT rules, but those rules could be absent if consumed (advanced) during the parse loop. Look up grammar.start_nt directly instead, which covers all cases. Co-Authored-By: Claude Opus 4.6

Replace silent rescue with explicit type check in Item constructor

2026-02-24T16:18:29Z

When creating an Item from a Rule (not an Item), tail_spans doesn't exist. Check with is_a?(Item) instead of catching the exception silently. Co-Authored-By: Claude Opus 4.6

Emit binary glue rule only once

2026-02-24T16:16:06Z

The [S] -> [S] [X] concatenation rule was duplicated for every non-S LHS symbol. Move it out of the loop so it's added once. Co-Authored-By: Claude Opus 4.6

Deduplicate all_paths by reachable edge set

2026-02-24T16:14:37Z

The Cartesian product over all nodes produces duplicate derivations when edges differ only in nodes unreachable from the top. Walk reachable edges from the top edge of each path and drop paths with identical reachable sets. Co-Authored-By: Claude Opus 4.6

Fix reordering bug in derive and add test example

2026-02-24T16:07:57Z

derive used a sequential counter to index into the source-side NT map, which only worked for monotone rules. Now looks up tails by the target NT's own index via map.index(i.index). Adds toy-reorder example (German verb-final -> English SVO) to exercise the fix. Also updates trollop -> optimist and guards xmlsimple require. Co-Authored-By: Claude Opus 4.6

rm

2016-06-17T12:10:27Z

fix

2016-06-17T12:10:00Z

new obj.

2015-11-16T16:21:40Z

mv

2015-11-16T16:20:58Z

weaver_proto -> ow_proto

2015-11-16T16:17:33Z