set line buffering when stderr redirected to file

src/options.c

@@ -108,6 +108,7 @@ static void check_opt(char *opt, char *optval, int type)
     } else if( (type == SHORT && *opt == 'l') || (type == LONG && !strcmp("log", opt)) ) {
         if(optval) {
           errfp = fopen(optval, "w");
+          setvbuf(errfp, NULL, _IOLBF, 0); /* line (_IOLBF) or disable (_IONBF) buffering on error log */
           if(!errfp) {
             errfp=stderr;
             dbg(0, "Problems opening log file: %s\n", optval);

src/psprint.c

@@ -146,6 +146,10 @@ void ps_drawPNG(xRect* r, double x1, double y1, double x2, double y2, int rot, i
 
   quality_attr = get_tok_value(r->prop_ptr, "jpeg_quality", 0);
   if(quality_attr[0]) quality = atoi(quality_attr);
+  else {
+    quality_attr = get_tok_value(r->prop_ptr, "jpg_quality", 0);
+    if(quality_attr[0]) quality = atoi(quality_attr);
+  }
   my_strdup(59, &filter, get_tok_value(r->prop_ptr, "filter", 0));
   image_data_len = my_strdup2(1183, &image_data64_ptr, get_tok_value(r->prop_ptr, "image_data", 0));
 
@@ -275,6 +279,11 @@ void ps_embedded_graph(xRect* r, double rx1, double ry1, double rx2, double ry2)
 
   quality_attr = get_tok_value(r->prop_ptr, "jpeg_quality", 0);
   if(quality_attr[0]) quality = atoi(quality_attr);
+  else {
+    quality_attr = get_tok_value(r->prop_ptr, "jpg_quality", 0);
+    if(quality_attr[0]) quality = atoi(quality_attr);
+  }
+  if(quality_attr[0]) quality = atoi(quality_attr);
   if (!has_x) return;
   rw = fabs(rx2 - rx1);
   rh = fabs(ry2 - ry1);

src/save.c

@@ -548,6 +548,7 @@ void free_rawfile(int dr)
   int i;
 
   int deleted = 0;
+  dbg(1, "free_rawfile(): clearing data\n");
   if(xctx->graph_names) {
     deleted = 1;
     for(i = 0 ; i < xctx->graph_nvars; i++) {