Re: [Groff] Why are pic pictures hanging at the TeX-baseline?

[Hartmut Henkel]

Hi,

there is still/yet another TeX issue with pic -t: Inline pictures like
A\hbox{\box\graph}B are not _standing_ on the baseline of the letters,
as it is standard in TeX (with \epsbox} or LaTeX (with
\includegraphics). Instead pic -t pictures are _hanging_ down from the
baseline: Their \ht = 0, and they have nonzero \dp (see my former
E-Mails end of 2002 with the same topic). This causes also vertical
spacing changes (e. g. towards captions) within the figure
float-environment.

I tried the old patch with the fresh tex.cpp, it is simply:


--- tex.cpp.orig        Thu Apr 24 23:03:44 2003
+++ tex.cpp     Thu Apr 24 23:13:31 2003
@@ -121,7 +121,7 @@
         "  \\newdimen\\graphtemp\n"
         "\\fi\n"
         "\\expandafter\\setbox\\csname %s\\endcsname\n"
-        " =\\vtop{\\vskip 0pt\\hbox{%%\n",
+        " =\\vbox{\\hbox{%%\n",
         graphname, graphname, graphname);
   pen_size = -2.0;
 }
@@ -130,8 +130,7 @@
 {
   printf("    \\hbox{\\vrule depth%.3fin width0pt height 0pt}%%\n"
         "    \\kern %.3fin\n"
-        "  }%%\n"
-        "}%%\n",
+        "  }\\kern 0pt}%%\n",
         height, width);
 }


I believe this should help for increased compatibility of pic within the
TeX environment, and would be glad to see it implemented.

Best Regards

Hartmut


------------------------------------------------------------------------
Dr.-Ing. Hartmut Henkel
Oftersheim, Germany
E-Mail: address@hidden
http://www.circuitwizard.de
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