Bugs item #274, was opened at 2005-01-31 03:09 You can respond by visiting: http://sarovar.org/tracker/?func=detail&atid=493&aid=274&group_id=106 Category: hz Group: None Status: Open Resolution: None Priority: 5 Submitted By: Robert (schlcht) Assigned to: The Thanh Han (hanthethanh) Summary: \unhbox kills protrusion Initial Comment: Protrusion will break when boxes containing protruded characters are \unhbox'ed. I've stumbled upon this when using edmac/ledmac, which decomposes each paragraph into lines, then reassembling them. I wasn't sure whether protrusion is supposed to survive this treatment but it does if one uses \unhcopy instead of \unhbox. Here's a greatly reduced example: %-------------------------------------------- \font\testfont=cmr10 \testfont \pdfprotrudechars=2 \rpcode\font`\-=1000 \parindent0pt \hsize=126pt \newbox\testline \newbox\testbox % \setbox\testbox\vbox{% Margin kerning is the adjustments of the characters at the margins of a typeset text. } \loop\ifvbox\testbox \setbox\testline=\vsplit\testbox to\baselineskip \unvbox\testline \setbox\testline=\lastbox \hbox to\hsize{\unhcopy\testline}% OK \hbox to\hsize{\unhbox\testline} % not OK \repeat \bye % -------------------------------------------------- Regards, Robert ----------------------------------------------------------------------

Comment By: Hartmut Henkel (hhenkel) Date: 2005-01-31 23:34

Message: Logged In: YES user_id=929 There seems to be one place in hz.ch where \unhbox and \unhcopy are treated differently: %@x [1100] - margin kerning %while link(tail)<>null do tail:=link(tail); %@y %if c = copy_code then begin % while link(tail)<>null do tail:=link(tail); %end %else while link(tail) <> null do begin % r := link(tail); % if not is_char_node(r) and (type(r) = margin_kern_node) then begin % link(tail) := link(r); % free_avail(margin_char(r)); % free_node(r, margin_kern_node_size); % end; % tail:=link(tail); %end; %@z After just commenting this piece out (as shown), both \unhcopy and \unhbox do protrusion ok. Now i don't have the slightest idea what this code is for, neither which side effects would appear if it's removed... Regards, Hartmut ---------------------------------------------------------------------- You can respond by visiting: http://sarovar.org/tracker/?func=detail&atid=493&aid=274&group_id=106