[Dvipng] Re: dvipng and mathpazo

[Jan-Åke Larsson]

Wolfram Krause wrote:
> We (a small group of students) are using dvipng for rendering formulas
> for a web preview. The text is set in Palatino later on and therefore we
> use the mathpazo package for the preview.

Good, good.

> However, last week we encountered problems with dvipng. Under some
> cirumstances certain characters are not printed:

> I looked at the Freetype-Calls (-d 32) and found out, that fplmr.pfb
> is not loaded ...

> 1. Can you reproduce the problem?

Yes. A previously loaded font (fplmri) is wrongly identified as fplmr.
That is why the ordering of the characters is important. It was very 
good that you provided a simple test case.

> 2. Do you have any idea what we are doing wrong?

My fault, I am afraid. Patch included. This will be in the next release.
Thanks for the bug report.

/JÅ

Index: font.c
===================================================================
RCS file: /cvsroot/dvipng/dvipng/font.c,v
retrieving revision 1.40
diff -u -r1.40 font.c
--- font.c      4 Feb 2005 14:42:03 -0000       1.40
+++ font.c      4 Jul 2005 16:04:41 -0000
@@ -118,6 +118,7 @@
   if (tfontnump!=NULL 
       && tfontnump->fontp->s == s 
       && tfontnump->fontp->d == d 
+      && strlen(tfontnump->fontp->n) == a+l 
       && strncmp(tfontnump->fontp->n,(char*)current+14,a+l) == 0) {
     DEBUG_PRINT((DEBUG_DVI|DEBUG_VF),("\n  FONT %d:\tMatch found",k));
     return;
@@ -143,6 +144,7 @@
   while (tfontptr != NULL 
         && (tfontptr->s != s 
             || tfontptr->d != d 
+            || strlen(tfontptr->n) != a+l 
             || strncmp(tfontptr->n,(char*)current+14,a+l) != 0 ) ) {
     tfontptr = tfontptr->next;
   }