From: Nicholas Clark <nick@ccl4.org>
Date: Sat, 15 Sep 2007 17:54:04 +0000 (+0000)
Subject: Note the gotcha about newlines in the elements of PL_preambleav.
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=00accf8d966ca5ecf8ccbaaebc0752903aa1634e;p=p5sagit%2Fp5-mst-13.2.git

Note the gotcha about newlines in the elements of PL_preambleav.

p4raw-id: //depot/perl@31871
---

diff --git a/intrpvar.h b/intrpvar.h
index f572fdd..a6a4a1c 100644
--- a/intrpvar.h
+++ b/intrpvar.h
@@ -349,6 +349,10 @@ PERLVAR(Ilastfd,	int)		/* what to preserve mode on */
 PERLVAR(Ioldname,	char *)		/* what to preserve mode on */
 PERLVAR(IArgv,		char **)	/* stuff to free from do_aexec, vfork safe */
 PERLVAR(ICmd,		char *)		/* stuff to free from do_aexec, vfork safe */
+/* Elements in this array have ';' appended and are injected as a single line
+   into the tokeniser. You can't put any (literal) newlines into any program
+   you stuff in into this array, as the point where it's injected is expecting
+   a single physical line. */
 PERLVAR(Ipreambleav,	AV *)
 PERLVAR(Imess_sv,	SV *)
 PERLVAR(Iors_sv,	SV *)		/* output record separator $\ */