From 89de29047dd63c42d0e0d6b1cab1eea82aeda08d Mon Sep 17 00:00:00 2001
From: Abhijit Menon-Sen <ams@wiw.org>
Date: Sat, 11 Aug 2001 22:01:04 +0530
Subject: [PATCH] turn $a.=<F> into an RCATLINE Message-ID:
 <20010811163104.Q526@lustre.dyn.wiw.org>

p4raw-id: //depot/perl@11634
---
 op.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/op.c b/op.c
index 52fd74d..b9b7869 100644
--- a/op.c
+++ b/op.c
@@ -6882,6 +6882,15 @@ Perl_peep(pTHX_ register OP *o)
 				SvPV_nolen(sv));
 		}
 	    }
+	    else if (o->op_next->op_type == OP_READLINE
+		    && o->op_next->op_next->op_type == OP_CONCAT
+		    && (o->op_next->op_next->op_flags & OPf_STACKED))
+	    {
+		/* Turn "$a .= <FH>" into an OP_RCATLINE. AMS 20010811 */
+		o->op_next->op_type   = OP_RCATLINE;
+		o->op_next->op_flags |= OPf_STACKED;
+		op_null(o->op_next->op_next);
+	    }
 
 	    o->op_seq = PL_op_seqmax++;
 	    break;
-- 
2.7.4