1 files changed, 34 insertions, 0 deletions
diff --git a/media-gfx/graphviz/files/graphviz-2.38-fix-backslashes.patch b/media-gfx/graphviz/files/graphviz-2.38-fix-backslashes.patch
new file mode 100644
index 000000000000..b4e911de6a94
--- /dev/null
+++ b/media-gfx/graphviz/files/graphviz-2.38-fix-backslashes.patch
@@ -0,0 +1,34 @@
+User reported a regression between 2.26 and 2.36
+when trying to .dot the following graph:
+
+    digraph g {
+        1 -> 2 [label="\\"]
+    }
+
+2.26 shows it as '\' while 2.36 fails as:
+    $ dot -Tpng a.dot -o a.png
+    Warning: 1.dot: syntax error in line 2 near ''
+
+Thanks to Ulya Trofimovich who found and bisected
+the problem down to this commit, which fixes problem
+only in git version.
+
+commit 386e47c14b3a8e83bdf3ec8772963213095a7294
+Author: Emden R. Gansner <erg@alum.mit.edu>
+Date:   Thu Jan 30 08:45:06 2014 -0500
+
+    Remove change made in d19b672a3c06f0ae95b1da38b63b068f71eb266f until we can
+    remember why this change was made.
+
+diff --git a/lib/cgraph/scan.l b/lib/cgraph/scan.l
+index 0a31f0c..5bb30b7 100644
+--- a/lib/cgraph/scan.l
++++ b/lib/cgraph/scan.l
+@@ -199,6 +199,7 @@ ID		({NAME}|{NUMBER})
+ ["]						BEGIN(qstring); beginstr();
+ <qstring>["]			BEGIN(INITIAL); endstr(); return (T_qatom);
+ <qstring>[\\]["]		addstr ("\"");
++<qstring>[\\][\\]		addstr ("\\\\");
+ <qstring>[\\][\n]		line_num++; /* ignore escaped newlines */
+ <qstring>([^"\\]*|[\\])		addstr(yytext);
+ [<]						BEGIN(hstring); html_nest = 1; beginstr();