--- settings.cc.orig	2016-11-15 10:39:44.419656094 +0900
+++ settings.cc	2016-11-15 10:41:51.958651237 +0900
@@ -91,11 +91,11 @@
 string HOME="HOME";
 string docdir=ASYMPTOTE_DOCDIR;
 const char pathSeparator=':';
-string defaultPSViewer="gv";
+string defaultPSViewer="evince";
 #ifdef __APPLE__
 string defaultPDFViewer="open";
 #else  
-string defaultPDFViewer="acroread";
+string defaultPDFViewer="evince";
 #endif  
 string defaultGhostscript="gs";
 string defaultGhostscriptLibrary="/usr/lib/libgs.so";
@@ -707,7 +707,8 @@
   bool getOption() {
     string str=optarg;
     
-    if(str == "latex" || str == "pdflatex" || str == "xelatex" ||
+    if(str == "platex" ||
+       str == "latex" || str == "pdflatex" || str == "xelatex" ||
        str == "tex" || str == "pdftex" || str == "luatex" ||
        str == "lualatex" || str == "context" || str == "none") {
       value=str;