K 10
svn:author
V 3
hrs
K 8
svn:date
V 27
2012-01-28T08:56:56.000000Z
K 7
svn:log
V 611
Add tab expansion procedure into ($verbatim-display$).  Although DSSSL
specification supports expand-tabs: characteristics in paragraph flow objects,
printable format backends in our DSSSL processors (Jade or OpenJade) do not
support it.

The committed code expands a literal tab character into literal spaces with
length of %default-tab-spacing%.  In the position calculation, it assumes all
of characters have a fixed width and the number of characters in a node list
can be obtained by (string-length (data nl)).  Note that this can be false
especially when different font sizes are used.

Tested by:	wblock

END