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

[Hartmut Henkel]

Here is the diff, which puts \box\graph on the TeX baseline, plus
manpage change...

Greetings Hartmut


------------------------------------------------------------------------

--- ../../../../x/groff-1.18.1/src/preproc/pic/tex.cc   Fri Oct  5 16:12:23 2001
+++ tex.cc      Mon Dec  2 20:38:03 2002
@@ -116,7 +116,7 @@
     idea of the bounding box of the picture. */
   fputs("\\expandafter\\ifx\\csname graph\\endcsname\\relax \\csname 
newbox\\endcsname\\graph\\fi\n"
        "\\expandafter\\ifx\\csname graphtemp\\endcsname\\relax \\csname 
newdimen\\endcsname\\graphtemp\\fi\n"
-       "\\setbox\\graph=\\vtop{\\vskip 0pt\\hbox{%\n",
+       "\\setbox\\graph=\\vbox{\\hbox{%\n",
        stdout);
   pen_size = -2.0;
 }
@@ -125,8 +125,7 @@
 {
   printf("    \\hbox{\\vrule depth%.3fin width0pt height 0pt}%%\n"
         "    \\kern %.3fin\n"
-        "  }%%\n"
-        "}%%\n",
+        "}\\kern 0pt}%%\n",
         height, width);
 }

------------------------------------------------------------------------

--- ../../../../x/groff-1.18.1/src/preproc/pic/pic.man  Fri Sep 20 07:46:52 2002
+++ pic.man     Mon Dec  2 20:53:39 2002
@@ -240,16 +240,6 @@
 \ecenterline{\ebox\egraph}
 .RE
 .LP
-Actually, since the vbox has a height of zero this will produce
-slightly more vertical space above the picture than below it;
-.RS
-.LP
-.B
-\ecenterline{\eraise 1em\ebox\egraph}
-.RE
-.LP
-would avoid this.
-.LP
 You must use a \*(tx driver that supports the
 .B tpic
 specials, version 2.

------------------------------------------------------------------------