patch 7.4.1851

Problem:    test_syn_attr failes when using the GUI. (Dominique Pelle)
Solution:   Escape the font name properly.

src/testdir/test_syn_attr.vim

@@ -27,7 +27,7 @@ func Test_missing_attr()
     if fontname == ''
       let fontname = 'something'
     endif
-    exe 'hi Mine guifg=blue guibg=red font=' . escape(fontname, ' \')
+    exe "hi Mine guifg=blue guibg=red font='" . fontname . "'"
     call assert_equal('blue', synIDattr(hlID("Mine"), "fg", 'gui'))
     call assert_equal('red', synIDattr(hlID("Mine"), "bg", 'gui'))
     call assert_equal(fontname, synIDattr(hlID("Mine"), "font", 'gui'))

src/version.c

@@ -753,6 +753,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1851,
 /**/
     1850,
 /**/