1 files changed, 25 insertions, 0 deletions
diff --git a/src/extension/system.cpp b/src/extension/system.cpp
index ebad0c050..476499385 100644
--- a/src/extension/system.cpp
+++ b/src/extension/system.cpp
@@ -68,7 +68,26 @@ static Extension *build_from_reprdoc(Inkscape::XML::Document *doc, Implementatio
  */
 SPDocument *open(Extension *key, gchar const *filename)
 {
+    // Convert to absolute pathname to tolerate chdir().
+    bool relpath = (filename[0] != '/');
+#ifdef WIN32
+    relpath &= (filename[0] != '\\') && !(isalpha(filename[0]) && (filename[1] == ':'));
+#endif
+
+    if (relpath) {
+        gchar * curdir = NULL;
+#ifndef WIN32
+        curdir = getcwd(NULL, 0);
+#else
+        curdir = _getcwd(NULL, 0);
+#endif
+
+        filename = g_build_filename(curdir, filename, NULL);
+        free(curdir);
+    }
+
     Input *imod = NULL;
+
     if (key == NULL) {
         gpointer parray[2];
         parray[0] = (gpointer)filename;
@@ -108,6 +127,9 @@ SPDocument *open(Extension *key, gchar const *filename)
     }
 
     if (!imod->prefs(filename)) {
+        if (relpath){
+            free((void *) filename);
+        }
         return NULL;
     }
 
@@ -129,6 +151,9 @@ SPDocument *open(Extension *key, gchar const *filename)
         imod->set_gui(true);
     }
 
+    if (relpath){
+        free((void *) filename);
+    }
     return doc;
 }