doio.c tweaks

  - see SV passed to dup type open "looks_like__number"
  - apply layers to pipe opens.

p4raw-id: //depot/perlio@17030

diff --git a/doio.c b/doio.c
index decd188..0be42df 100644 (file)
--- a/doio.c
+++ b/doio.c
@@ -254,10 +254,6 @@ Perl_do_openn(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
                name = type;
                len = tend-type;
            }
-           else {
-             if (*type)
-                 goto unknown_desr;
-           }
            if (*name == '\0') {
                /* command is missing 19990114 */
                if (ckWARN(WARN_PIPE))
@@ -285,6 +281,13 @@ Perl_do_openn(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
            else {
                fp = PerlProc_popen(name,mode);
            }
+           if (num_svs) {
+               if (*type) {
+                   if (PerlIO_apply_layers(aTHX_ fp, mode, type) != 0) {
+                       goto say_false;
+                   }
+               }
+           }
        }
        else if (*type == IoTYPE_WRONLY) {
            TAINT_PROPER("open");
@@ -320,7 +323,7 @@ Perl_do_openn(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
                    if (num_svs > 1) {
                        Perl_croak(aTHX_ "More than one argument to '%c&' open",IoTYPE(io));
                    }
-                   if (num_svs && SvIOK(*svp)) {
+                   if (num_svs && (SvIOK(*svp) || (SvPOK(*svp) && looks_like_number(*svp)))) {
                        fd = SvUV(*svp);
                    }
                    else if (isDIGIT(*type)) {
@@ -487,6 +490,14 @@ Perl_do_openn(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
                fp = PerlProc_popen(name,mode);
            }
            IoTYPE(io) = IoTYPE_PIPE;
+           if (num_svs) {
+               for (; isSPACE(*type); type++) ;
+               if (*type) {
+                   if (PerlIO_apply_layers(aTHX_ fp, mode, type) != 0) {
+                       goto say_false;
+                   }
+               }
+           }
        }
        else {
            if (num_svs)