fix a bug when splitting author list

bibacid-utf8.bib

@@ -229,3 +229,15 @@ MRREVIEWER = {Jean-Fran{\c{c}}ois Clouet},
   author = "Foo Bar",
   year = 2017
 }
+
+@techreport{arXiv-1807.05030,
+ author = {Oscar Luis Vera{-}P{\'{e}}rez and
+               Benjamin Danglot and
+               Martin Monperrus and
+               Benoit Baudry},
+ title = {A Comprehensive Study of Pseudo-tested Methods},
+ year = {2018},
+ number = {1807.05030},
+ institution = {arXiv},
+ url = {http://arxiv.org/pdf/1807.05030},
+}

bibtexbrowser-test.php

@@ -653,6 +653,7 @@ class BTBTest extends PHPUnit_Framework_TestCase {
     function test_identity() {
         $btb = new BibDataBase();
         $btb->load('bibacid-utf8.bib');
+        bibtexbrowser_configure('BIBTEXBROWSER_BIBTEX_VIEW_FILTEREDOUT', '');
 
         // computing the representation
         $d = new SimpleDisplay();
@@ -663,6 +664,7 @@ class BTBTest extends PHPUnit_Framework_TestCase {
 
         $nref = count($btb->bibdb);
         $bibtex = $btb->toBibtex();
+        
         // reparsing the new content
         $btb2 = $this->_createDB($bibtex, 'bibacid-utf8.bib');
         $d->setDB($btb2);
@@ -750,6 +752,15 @@ class BTBTest extends PHPUnit_Framework_TestCase {
         $this->assertEquals("[1]", $db->getEntryByKey('key2')->getAbbrv());
     }
 
+    function test_bug_201808() {
+        $btb = new BibDataBase();
+        $btb->load('bibacid-utf8.bib');
+        $this->assertEquals(4,count($btb->bibdb['arXiv-1807.05030']->getRawAuthors()));
+        $this->assertEquals(4,count($btb->bibdb['arXiv-1807.05030']->getFormattedAuthorsArray()));
+        $this->assertEquals("Oscar Luis Vera-Pérez, Benjamin Danglot, Martin Monperrus and Benoit Baudry",$btb->bibdb['arXiv-1807.05030']->getAuthor());
+    }
+
+
 } // end class
 
 @copy('bibtexbrowser.local.php.bak','bibtexbrowser.local.php');

bibtexbrowser.php

@@ -1394,7 +1394,7 @@ class BibEntry {
    * return a string 'Unknown'. */
   function getAuthor() {
     if (array_key_exists(AUTHOR, $this->fields)) {
-      return getFormattedAuthorsString();
+      return $this->getFormattedAuthorsString();
     }
     // 2010-03-02: commented the following, it results in misleading author lists
     // issue found by Alan P. Sexton
@@ -1444,7 +1444,7 @@ class BibEntry {
   }
 
   function split_authors() {
-    $array = preg_split('/ and /i', @$this->raw_fields[Q_AUTHOR]);
+    $array = preg_split('/ and( |$)/ims', @$this->raw_fields[Q_AUTHOR]);
     $res = array();
     // we merge the remaining ones
     for ($i=0; $i < count($array)-1; $i++) {