From: Scott Kostyshak <skostysh@lyx.org>
Date: Thu, 29 Oct 2015 02:51:24 +0000 (-0400)
Subject: Disable "Show Output Anyway" button if empty file
X-Git-Tag: 2.2.0alpha1~120
X-Git-Url: https://git.lyx.org/gitweb/?a=commitdiff_plain;h=0ca63f4e27edd749331b3e94b84538b7af5f776b;p=lyx.git

Disable "Show Output Anyway" button if empty file

Sometimes when compilation fails a PDF file is created but is empty
and the viewer gives an error when trying to view it. One such
example is compiling the current lib/examples/PDF-comment.lyx file
with TeX fonts and the following version of LuaTeX:

  beta-0.80.0 (TeX Live 2015) (rev 5238)
---

diff --git a/src/Buffer.cpp b/src/Buffer.cpp
index ae06ff89f4..e6096af747 100644
--- a/src/Buffer.cpp
+++ b/src/Buffer.cpp
@@ -2440,7 +2440,7 @@ bool Buffer::getStatus(FuncRequest const & cmd, FuncStatus & flag)
 
 	case LFUN_BUFFER_VIEW_CACHE:
 		(d->preview_file_).refresh();
-		enable = (d->preview_file_).exists();
+		enable = (d->preview_file_).exists() && !(d->preview_file_).isFileEmpty();
 		break;
 
 	default: