[perl #22944] PERL5LIB is not colon-separated everywhere

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

diff --git a/mg.c b/mg.c
index ba576c3..dc1666a 100644 (file)
--- a/mg.c
+++ b/mg.c
@@ -1881,6 +1881,7 @@ Perl_magic_killbackrefs(pTHX_ SV *sv, MAGIC *mg)
        }
        i--;
     }
+    SvREFCNT_dec(av); /* remove extra count added by sv_add_backref() */
     return 0;
 }
 
@@ -1975,8 +1976,13 @@ Perl_magic_set(pTHX_ SV *sv, MAGIC *mg)
        break;
 
     case '\004':       /* ^D */
-       PL_debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | DEBUG_TOP_FLAG;
+#ifdef DEBUGGING
+       s = SvPV_nolen(sv);
+       PL_debug = get_debug_opts(&s) | DEBUG_TOP_FLAG;
        DEBUG_x(dump_all());
+#else
+       PL_debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | DEBUG_TOP_FLAG;
+#endif
        break;
     case '\005':  /* ^E */
        if (*(mg->mg_ptr+1) == '\0') {
@@ -2367,60 +2373,26 @@ Perl_magic_set(pTHX_ SV *sv, MAGIC *mg)
             pstat(PSTAT_SETCMD, un, len, 0, 0);
        }
 #endif
-       if (!PL_origalen) {
-           s = PL_origargv[0];
-           s += strlen(s);
-           /* See if all the arguments are contiguous in memory */
-           for (i = 1; i < PL_origargc; i++) {
-               if (PL_origargv[i] == s + 1
-#ifdef OS2
-                   || PL_origargv[i] == s + 2
-#endif
-                  )
-               {
-                   ++s;
-                   s += strlen(s);     /* this one is ok too */
-               }
-               else
-                   break;
-           }
-           /* can grab env area too? */
-           if (PL_origenviron
-#ifdef USE_ITHREADS
-               && PL_curinterp == aTHX
-#endif
-               && (PL_origenviron[0] == s + 1))
-           {
-               my_setenv("NoNe  SuCh", Nullch);
-                                           /* force copy of environment */
-               for (i = 0; PL_origenviron[i]; i++)
-                   if (PL_origenviron[i] == s + 1) {
-                       ++s;
-                       s += strlen(s);
-                   }
-                   else
-                       break;
-           }
-           PL_origalen = s - PL_origargv[0];
-       }
+       /* PL_origalen is set in perl_parse(). */
        s = SvPV_force(sv,len);
-       i = len;
-       if (i >= (I32)PL_origalen) {
-           i = PL_origalen;
-           /* don't allow system to limit $0 seen by script */
-           /* SvCUR_set(sv, i); *SvEND(sv) = '\0'; */
-           Copy(s, PL_origargv[0], i, char);
-           s = PL_origargv[0]+i;
-           *s = '\0';
+       if (len >= (STRLEN)PL_origalen) {
+           /* Longer than original, will be truncated. */
+           Copy(s, PL_origargv[0], PL_origalen, char);
+           PL_origargv[0][PL_origalen - 1] = 0;
        }
        else {
-           Copy(s, PL_origargv[0], i, char);
-           s = PL_origargv[0]+i;
-           *s++ = '\0';
-           while (++i < (I32)PL_origalen)
-               *s++ = '\0';
+           /* Shorter than original, will be padded. */
+           Copy(s, PL_origargv[0], len, char);
+           PL_origargv[0][len] = 0;
+           memset(PL_origargv[0] + len + 1,
+                  /* Is the space counterintuitive?  Yes.
+                   * (You were expecting \0?)  
+                   * Does it work?  Seems to.  (In Linux 2.4.20 at least.)
+                   * --jhi */
+                  (int)' ',
+                  PL_origalen - len - 1);
            for (i = 1; i < PL_origargc; i++)
-               PL_origargv[i] = Nullch;
+                PL_origargv[i] = 0;
        }
        UNLOCK_DOLLARZERO_MUTEX;
        break;