[texhax] Displaying the \current value of \prevgraf in the log file

Philip TAYLOR P.Taylor at Rhul.Ac.Uk
Sun Nov 13 20:01:29 CET 2011

Paul Isambert wrote:

> I don't know about \vadjust injection, but \showlists doesn mention
> prevgraf. For instance "abc\par\showlists\bye" produces:
> ### vertical mode entered at line 0
> ### current page:
> ... blah blah ...
> total height 10.0
> goal height 643.20255
> prevdepth 0.0, prevgraf 1 line

Oh ... I tried something similar, and saw
prevdepth but no prevgraf -- let me try
your example and see how it differs ...

Yes, you're quite right : \showlists after
a non-empty paragraph and a \par does indeed
show the current value of \prevgraf.  Unfortunately
it doesn't help me to find the value at a \vadjust !

** Phil.

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