From: Georg Baum <baum@lyx.org>
Date: Sat, 2 Jul 2016 16:58:30 +0000 (+0200)
Subject: Fix CAS input on windows (bug 10262)
X-Git-Tag: 2.3.0alpha1~1359
X-Git-Url: https://git.lyx.org/gitweb/?a=commitdiff_plain;h=6dfc255088ecd3393c4c5dc3d2c5357a3fbabfc0;p=features.git

Fix CAS input on windows (bug 10262)

This is the well known file locking problem: The TempFile class keeps the
created file locked for the own process, and this prevents the CAS to read it.
---

diff --git a/src/mathed/MathExtern.cpp b/src/mathed/MathExtern.cpp
index b3443fa919..8b1e0f0c8d 100644
--- a/src/mathed/MathExtern.cpp
+++ b/src/mathed/MathExtern.cpp
@@ -1001,8 +1001,13 @@ namespace {
 	{
 		// In order to avoid parsing problems with command interpreters
 		// we pass input data through a file
-		TempFile tempfile("casinput");
-		FileName const cas_tmpfile = tempfile.name();
+		// Since the CAS is supposed to read the temp file we need
+		// to unlock it on windows (bug 10262).
+		unique_ptr<TempFile> tempfile(new TempFile("casinput"));
+		tempfile->setAutoRemove(false);
+		FileName const cas_tmpfile = tempfile->name();
+		tempfile.reset();
+
 		if (cas_tmpfile.empty()) {
 			lyxerr << "Warning: cannot create temporary file."
 			       << endl;