Add support for type 1 seac charstring command.

src/fonts.js

@@ -3391,8 +3391,8 @@ var Type1Parser = function type1Parser() {
       '1': 'vstem',
       '2': 'hstem',
 
+      '6': 'endchar', // seac
       // Type1 only command with command not (yet) built-in ,throw an error
-      '6': -1, // seac
       '7': -1, // sbw
 
       '11': 'sub',
@@ -3464,6 +3464,10 @@ var Type1Parser = function type1Parser() {
             // pop or setcurrentpoint commands can be ignored
             // since we are not doing callothersubr
             continue;
+          } else if (escape == 6) {
+            // seac is like type 2's special endchar but it doesn't use the
+            // first argument asb, so remove it.
+            charstring.splice(charstring.length - 5, 1);
           } else if (!kHintingEnabled && (escape == 1 || escape == 2)) {
             charstring.push('drop', 'drop', 'drop', 'drop', 'drop', 'drop');
             continue;

test/pdfs/issue818.pdf.link

@@ -0,0 +1 @@
+http://www.effi.org/system/files?file=effi-siv-251110.pdf

test/test_manifest.json

@@ -624,5 +624,13 @@
       "pageLimit": 2,
       "link": true,
       "type": "eq"
+    },
+    {  "id": "issue818",
+      "file": "pdfs/issue818.pdf",
+      "md5": "dd2f8a5bd65164ad74da2b45a6ca90cc",
+      "rounds": 1,
+      "pageLimit": 1,
+      "link": true,
+      "type": "eq"
     }
 ]