Re: PostScript rendering bug involving word with an umlaut

[Werner LEMBERG]

> The key to triggering the bug seems to be the combination of groff
> automatically inserting breaks into a paragraph and the word with
> the umlaut appearing first on a resulting line--note that the
> problem disappears if a ".brp" is placed right before the umlauted
> word in the third paragraph.

Thanks for the report.  Below is a patch which fixes the symptoms, but
I still have to bisect over all groff versions to find out how and why
I have introduced this bug (or probably feature)...


    Werner

======================================================================


--- e.tmac.old  2011-01-25 08:50:13.000000000 +0100
+++ e.tmac      2011-02-12 21:30:42.000000000 +0100
@@ -1894,22 +1894,22 @@
 .ds #v 0.6m
 .
 .\"                    \" accents
-.ds ' \k_\h'-(\\n(.wu*8/10-\*(#h)'\(aa\h'|\\n_u'
-.ds ` \k_\h'-(\\n(.wu*7/10-\*(#h)'\(ga\h'|\\n_u'
+.ds ' \h'0'\k_\h'-(\\n(.wu*8/10-\*(#h)'\(aa\h'|\\n_u'
+.ds ` \h'0'\k_\h'-(\\n(.wu*7/10-\*(#h)'\(ga\h'|\\n_u'
 .
 .\"                    \" umlaut
-.ds : 
\k_\h'-(\\n(.wu*8/10-\*(#h+0.1m)'\v'-\*(#v'\z.\h'0.2m'.\h'|\\n_u'\v'\*(#v'
+.ds : 
\h'0'\k_\h'-(\\n(.wu*8/10-\*(#h+0.1m)'\v'-\*(#v'\z.\h'0.2m'.\h'|\\n_u'\v'\*(#v'
 .
 .\"                    \" circumflex and tilde
-.ds ^ \k_\h'-(\\n(.wu-\*(#h-0.05m)'^\h'|\\n_u'
-.ds ~ \k_\h'-(\\n(.wu-\*(#h-0.05m)'~\h'|\\n_u'
+.ds ^ \h'0'\k_\h'-(\\n(.wu-\*(#h-0.05m)'^\h'|\\n_u'
+.ds ~ \h'0'\k_\h'-(\\n(.wu-\*(#h-0.05m)'~\h'|\\n_u'
 .
 .\"                    \" cedilla and czech
-.ds , \k_\h'-(\\n(.wu)',\h'|\\n_u'
-.ds v \k_\h'-(\\n(.wu*9/10-\*(#h)'\v'-\*(#v'\s-4v\s0\v'\*(#v'\h'|\\n_u'
+.ds , \h'0'\k_\h'-(\\n(.wu)',\h'|\\n_u'
+.ds v \h'0'\k_\h'-(\\n(.wu*9/10-\*(#h)'\v'-\*(#v'\s-4v\s0\v'\*(#v'\h'|\\n_u'
 .
 .\"                    \" Norwegian A or angstrom
-.ds o \k_\h'-(\\n(.wu+\w'\(de'u-\*(#h)/2u'\v'-0.4n'\z\(de\v'0.4n'\h'|\\n_u'
+.ds o 
\h'0'\k_\h'-(\\n(.wu+\w'\(de'u-\*(#h)/2u'\v'-0.4n'\z\(de\v'0.4n'\h'|\\n_u'
 .
 .\"                    \" there exists, for all
 .ds qe 
\s-2\v'0.45m'\z\(em\v'-0.625m'\z\(em\v'-0.625m'\(em\v'0.8m'\s0\h'-0.1m'\v'-0.05m'\(br\v'0.05m'\h'0.1m'