Re: enhanced font remain for x11 term

[Shigeharu T. <sh...@ie...>]

shige 08/09 2010
----------------

Ethan Merritt wrote:
| > In enhanced mode for x11 term, the following commands
| > 
| >  set ylabel '{/Symbol=20 x}'
| >  set xlabel 'sin' font ',14'
| >  plot sin(x) notitle
| > 
| > put the xlabel of "Symbol" font, but other terminals (post,wxt,
| > svg,emf) put xlabels of default font.
| > 
| > This may be fixed by the following patch.
| 
| Thank you for the bug report.
| Your test case does indeed reveal a problem.
| Unfortunately, on my computer the patch does not fix it.
| Maybe we need a corresponding change in gplt_x11?

I find that the gnuplot_x11 uses the previous font if the default
font is unknown and the font specification form is ',<size>'. For
example, 

  set term x11 enh font "Unknown-Fontname"
  set ylabel '{/Symbol=20 x}'
  set xlabel 'sin' font ',14'
  plot x

the problem also remains even if with my last patch. 

The following additional patch for src/gplt_x11.c may solve the 
problem. But, I don't know well that we should use the default 
font instead of previous font for such a case.

----- From here -----
--- src/gplt_x11.c.ORG	Mon Aug  9 18:54:02 2010
+++ src/gplt_x11.c	Mon Aug  9 20:02:38 2010
@@ -5549,7 +5549,9 @@
 pr_font( fontname )
 char *fontname;
 {
+#if 0
     static char previous_font_name[128];
+#endif
     char fontspec[128];
     int  fontsize = 0;
 #ifdef USE_X11_MULTIBYTE
@@ -5612,7 +5614,11 @@
 #endif
 	} else if (*fontname == ',') {
 	    sscanf(&fontname[1], "%d", &fontsize);
+#if 0
 	    fontname = previous_font_name;
+#else
+	    fontname = default_font;
+#endif
 #ifdef USE_X11_MULTIBYTE
 	    backfont = 1;
 #endif
@@ -5758,8 +5764,10 @@
 	if (usemultibyte && orgfontname)
 	  fontname = orgfontname;
 #endif
+#if 0
         strncpy(previous_font_name, fontname, sizeof(previous_font_name)-1);
         FPRINTF((stderr, "gnuplot_x11:saving current font name \"%s\"\n", previous_font_name));
+#endif
     }
 
     /* By now we have tried everything we can to honor the specific request. */
----- To here -----

+========================================================+
 Shigeharu TAKENO     NIigata Institute of Technology
                       kashiwazaki,Niigata 945-1195 JAPAN
 sh...@ie...   TEL(&FAX): +81-257-22-8161
+========================================================+