Hyperscript: precedes/follows comparisons, tokenizer keywords

Parser: precedes/follows comparison operators in parse-cmp.
Tokenizer: precedes, follows, ignoring, case keywords.
Runtime: precedes?, follows? string comparison functions.

372/831 (45%)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

lib/text-layout.sx

@@ -22,6 +22,7 @@
     sum-widths
     find-breaks
     break-lines
+    break-lines-greedy
     position-line
     position-lines
     layout-paragraph
@@ -309,4 +310,31 @@
             (lh (or line-height 1.4)))
           (layout-paragraph words f s w lh))))))
 
+(define
+  break-lines-greedy
+  (fn
+    (widths space-width max-width)
+    (let
+      ((n (len widths)))
+      (if
+        (= n 0)
+        (list)
+        (let
+          ((lines (list)) (start 0) (used 0))
+          (for-each
+            (fn
+              (i)
+              (let
+                ((w (nth widths i))
+                  (needed (if (= i start) w (+ used space-width w))))
+                (if
+                  (and (> needed max-width) (not (= i start)))
+                  (do
+                    (set! lines (append lines (list (list start i))))
+                    (set! start i)
+                    (set! used w))
+                  (set! used needed))))
+            (range n))
+          (append lines (list (list start n))))))))
+
 (import (sx text-layout))