feat: [phrase:1.5] is a weight too -- brackets are the universal prompt markup

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

h3_token_weights.py

@@ -76,7 +76,10 @@ FPS = 24
 FRAME_PER_TOKEN = (1, 4, 4, 4, 4)
 
 
-_MARKUP = re.compile(_TIMED.pattern + "|" + _WEIGHTED.pattern)
+# [phrase:1.5] - a weight with no window, in brackets so a shortcut replacement's own
+# parentheses cannot break it (the reason timed phrases use brackets at all).
+_BRACKET_WEIGHTED = re.compile(r"(?<!\\)\[([^\[\]@]*?):\s*(-?\d+(?:\.\d+)?)\s*\]")
+_MARKUP = re.compile(_TIMED.pattern + "|" + _WEIGHTED.pattern + "|" + _BRACKET_WEIGHTED.pattern)
 
 
 def parse_markup(text: str):
@@ -98,9 +101,10 @@ def parse_markup(text: str):
             if t1 > t0 and phrase.strip():
                 timed.append((start, start + len(phrase),
                               float(m.group(2)) if m.group(2) else 1.0, t0, t1))
-        else:                                            # (phrase:w)
-            phrase = m.group(5)
-            weighted.append((start, start + len(phrase), float(m.group(6))))
+        else:                                            # (phrase:w) or [phrase:w]
+            phrase = m.group(5) if m.group(5) is not None else m.group(7)
+            weight = m.group(6) if m.group(6) is not None else m.group(8)
+            weighted.append((start, start + len(phrase), float(weight)))
         out.append(phrase)
         pos = m.end()
     out.append(text[pos:])

movie_editor/frontend/composer.js

@@ -452,8 +452,8 @@
       found.push({ phrase, t0, t1, w: m[2] ? parseFloat(m[2]) : 1, bad: !(t1 > t0) });
     }
     // (phrase:1.5) — a weight with no window. Mirrors h3_token_weights._WEIGHTED.
-    const weighted = [...txt.matchAll(/(?<!\\)\(([^():]*?):\s*(-?\d+(?:\.\d+)?)\s*\)/g)]
-      .map((m) => ({ phrase: m[1].trim(), w: parseFloat(m[2]) })).filter((f) => f.phrase);
+    const weighted = [...txt.matchAll(/(?<!\\)\(([^():]*?):\s*(-?\d+(?:\.\d+)?)\s*\)|(?<!\\)\[([^\[\]@]*?):\s*(-?\d+(?:\.\d+)?)\s*\]/g)]
+      .map((m) => ({ phrase: (m[1] ?? m[3]).trim(), w: parseFloat(m[2] ?? m[4]) })).filter((f) => f.phrase);
     const PC = window.PipelineCaps;
     const h3 = !!(PC && PC.isH3 && PC.isH3(S.get()));
     let msg = "";

tests/test_h3_token_weights.py

@@ -942,3 +942,9 @@ def test_a_typed_weight_alone_is_enough(refiner, monkeypatch):
             "minimax_token_tags": [1] * 8}
     out = refiner._v2_apply_h3_timed_phrases([[torch.zeros(1, 8, 4), meta]], _H3Clip())
     assert out[0][1]["funpack_h3_token_weights"]["spans"] == [(0, 3, 1.5)]
+
+
+def test_a_bracketed_weight_without_a_window_is_a_plain_weight():
+    clean, weighted, timed = tw.parse_markup("a [cat (sitting):1.5] [runs@1-2]")
+    assert clean == "a cat (sitting) runs"
+    assert weighted == [(2, 15, 1.5)] and timed == [(16, 20, 1.0, 1.0, 2.0)]