Perldelta for GH#22785, OP_SUBSTR_LEFT

Perl · Jan 14, 2025 · 04d2e69 · 04d2e69
1 parent 6197847
commit 04d2e69
Showing 1 changed file with 9 additions and 0 deletions.
diff --git a/pod/perldelta.pod b/pod/perldelta.pod
@@ -109,6 +109,15 @@ There may well be none in a stable release.
 
 =item *
 
+The peephole optimizer recognises the following zero-offset C<substr>
+patterns and swaps in a new dedicated operator (C<OP_SUBSTR_LEFT>).
+[GH #22785]
+
+    substr($x, 0, ...)
+    substr($x, 0, ..., '')
+
+=item *
+
 XXX
 
 =back