On Wed, 29 Jul 2020, Mike Cooper wrote:
I would normally use tab stops and line breaks to achieve the following in a
numbered list:
1. DC = 3.20 bbl = 420 ft
HWDP = 3.90 bbl = 450 ft
DP = 34.63 bbl = 2,037 ft
Totals = 41.73 bbl = 2,907 ft
2. [next step …]
This is what I tried, but the output has a blank line at the number. I can’t
find anything about tabulate inside itemize.
\starttext
\startitemize[n]
\startitem \starttabulate[|l|l|r|l|r|]
\NC DC \NC = \NC 3.20 bbl \NC = \NC 420 ft
\NC \NR
\NC HWDP \NC = \NC 3.90 bbl \NC = \NC 450 ft
\NC \NR
\NC DP \NC = \NC 34.63 bbl \NC = \NC 2,037
ft \NC \NR
\NC DC \NC = \NC 41.73 bbl \NC = \NC 2,907
ft \NC \NR
\stoptabulate \stopitem
\startitem Convert 2,907 to TVD: \\TVD = 2,907 × cosine 45° = 2,907
× 0.707 = 2,056 ft \stopitem
\startitem ΔP = 2,056 ft × 0.052 × (15 - 7.2) = 834 psi
\stopitemize
\stoptext
Naive solution: Add a \hbox around tabulate:
\defineframed[tabulateframed][location=top,frame=off]
\starttext
\startitemize[n]
\startitem \dontleavehmode
\tabulateframed{\starttabulate[|l|l|r|l|r|]
\NC DC \NC = \NC 3.20 bbl \NC = \NC 420 ft
\NC \NR
\NC HWDP \NC = \NC 3.90 bbl \NC = \NC 450
ft \NC \NR
\NC DP \NC = \NC 34.63 bbl \NC = \NC 2,037
ft \NC \NR
\NC DC \NC = \NC 41.73 bbl \NC = \NC 2,907
ft \NC \NR
\stoptabulate} \stopitem
\startitem Convert 2,907 to TVD: \\TVD = 2,907 × cosine 45° = 2,907
× 0.707 = 2,056 ft \stopitem
\startitem ΔP = 2,056 ft × 0.052 × (15 - 7.2) = 834 psi
\stopitemize
\stoptext
Normally, you can fix such issues by appending a \dontleavehmode in front of
the command but that doesn't work here. The offending code is line 1300 of
tabl-tbl.mkxl:
\unexpanded\def\tabl_tabulate_outside_before
{\ifhmode\par\fi
\ifhmode
\vbox\bgroup
\let\tabl_tabulate_outside_after \egroup
\let\tabl_tabulate_outside_inbetween\relax
\orelse\ifinner
\let\tabl_tabulate_outside_after \relax
\let\tabl_tabulate_outside_inbetween\relax
\else
\whitespace
\tabulationparameter\c!before
\relax
\let\tabl_tabulate_outside_after \tabl_tabulate_outside_after_indeed
\let\tabl_tabulate_outside_inbetween\tabl_tabulate_outside_inbetween_indeed
\fi}
\protect
When you use \dontleavehmode\starttabulate, \starttabulate starts in horizontal
mode but the first \par in the above command takes it back to vertical mode.
The next \ifhmode then evaluates to false, \ifinner also evaluates to false, so
we enter the \else loop which inserts a \whitespace.
The reason why adding a \hbox{...} (which is what \framed without an align key
does) works is because inside an \hbox{...} \par doesn't take TeX back to
vertical mode. So, we enter the first branch.
Aditya
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