SunOS 4.1.4 is working, too.

[p5sagit/p5-mst-13.2.git] / perlio.c

diff --git a/perlio.c b/perlio.c
index fa2cd83..a508b64 100644 (file)
--- a/perlio.c
+++ b/perlio.c
@@ -4038,6 +4038,23 @@ PerlIOCrlf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
                 f, PerlIOBase(f)->tab->name, (mode) ? mode : "(Null)",
                 PerlIOBase(f)->flags);
 #endif
+    {
+      /* Enable the first CRLF capable layer you can find, but if none
+       * found, the one we just pushed is fine.  This results in at
+       * any given moment at most one CRLF-capable layer being enabled
+       * in the whole layer stack. */
+        PerlIO *g = PerlIONext(f);
+        while (g && *g) {
+             PerlIOl *b = PerlIOBase(g);
+             if (b && b->tab == &PerlIO_crlf) {
+                  if (!(b->flags & PERLIO_F_CRLF))
+                       b->flags |= PERLIO_F_CRLF;
+                  PerlIO_pop(aTHX_ f);
+                  return code;
+             }           
+             g = PerlIONext(g);
+        }
+    }
     return code;
 }