Re: \indenting[next] and math => no vertical space before the formula

["Mikael Persson" <mickep@gmail.com>]

On Wed, Apr 30, 2008 at 7:02 PM, Aditya Mahajan <adityam@umich.edu> wrote:
>
> On Wed, 30 Apr 2008, Mikael Persson wrote:
>
>  > On Tue, Apr 29, 2008 at 6:49 AM, Aditya Mahajan <adityam@umich.edu> wrote:
>  >> On Mon, 28 Apr 2008, Mikael Persson wrote:
>  >>
>  >> > Hello again,
>  >> >
>  >> > * snip *
>  >> >>
>  >> >>  I could reproduce the result and have also a fix but I don't know what
>  >> >>  the correct
>  >> >>  reults should be and other people like Aditya should decide if it makes sense
>  >> >>  to change the current behaviour.
>  >> >>
>  >> >>  \def\startdisplaymath
>  >> >>   {\ifgridsnapping
>  >> >>      \beforedisplayspace
>  >> >>      \snapmathtogrid\vbox
>  >> > * snip *
>  >> >>  Wolfgang
>  >> >
>  >> > This fix seems not to solve the problem entirely. With this fix
>  >> > applied, If one now put a formula inside an enumeration one gets
>  >> > "double" space before the formula. This is a test file that shows the
>  >> > problem:
>  >>
>  >>  This is basically because in enumerations indenting is set to never.
>  >>
>  >>  You can see the same affect with
>  >>
>  >>  \setupindenting[no]
>  >>  \testtext
>  >>
>  >>  One possible fix is to add
>  >>
>  >>  indenting=(reset|next|first) %default is never
>  >>
>  >>  to the \setupenumeration command. For example
>  >>
>  >>
>  >> > \defineenumeration[example]
>  >> >        [text=Example,
>  >> >        location=serried,
>  >> >        width=fit,
>  >>           indenting=reset, %%<<<---- Add This
>  >>
>  >>>        distance=0.5em,
>  >> >       way=bysection,
>  >> >        ]
>  >>
>  >>  Another is to change \startdisplaymath to
>  >>
>  >>
>  >>  \def\startdisplaymath
>  >>    {\ifgridsnapping
>  >>       \beforedisplayspace
>  >>       \snapmathtogrid\vbox
>  >>
>  >>       \bgroup
>  >>       \informulatrue
>  >>      %\forgetall % breaks side floats
>  >>     \else
>  >>       \bgroup
>  >>       \parskip\formulaparskip % ! !
>  >>       \informulatrue
>  >>      %\forgetall % otherwise backgrounds fail
>  >>       \ifdim\lastskip<\zeropoint\else
>  >>         \par
>  >>         \ifvmode \ifdim\parskip>\zeropoint\relax
>  >>           \whitespace \vskip-\parskip % kind of forces and cancels again
>  >>         \fi \fi
>  >>       \fi
>  >>       \doif\displaygridcorrection{-\v!top}{\kern-\strutht}% new, currently only option/default
>  >>       \beforedisplayspace
>  >>       \par
>  >>       \ifvmode \ifdim\parskip>\zeropoint\relax \else
>  >>
>  >>        \ifindentfirstparagraph
>  >>           \verticalstrut
>  >>           \vskip-\struttotal
>  >>           \vskip-\baselineskip
>  >>         \fi\fi
>  >>       \fi
>  >>     \fi
>  >>     $$\setdisplaydimensions
>  >>     \setpredisplaysize\lastlinewidth
>  >>     \startinnermath}
>  >>
>  >>  But this is getting ugly.
>  >>
>  >>  Aditya
>  >>
>  >
>  > Thank you Aditya, but I don't get that to work. Both with
>  >
>  > ConTeXt  ver: 2007.04.03 13:01 MKII  fmt: 2008.4.24  int:
>  > english/english (with the fix earlier in this thread)
>  > and
>  > ConTeXt  ver: 2007.09.28 16:52 MKII  fmt: 2008.4.24  int:
>  > english/english (which is the one from new ubuntu, without the fix)
>  >
>  > this fails with the following error msg:
>  >
>  > %% Start error msg
>  > ! Illegal unit of measure (pt inserted).
>  > <to be read again>
>  >                   \chardef
>  > \@@in:reset ...rue \parindent \zerocount \chardef
>  >                                                  \indentingtoggle \zerocount
>  > \next1 #1,->\docomplexsetupindentingB {#1}
>  >                                          \doprocesscommaitem
>  > \doprocesscommalist ...item \gobbleoneargument #1,
>  >                                                  ]\relax \global \advance \...
>  > <argument> ...ndenting ]\docomplexsetupindentingB
>  >                                                  \checkeverypar \ifindentfi...
>  >
>  > \firstofoneargument #1->#1
>  >
>
>  An old bug (more than two month old :)
>
>  Also add this
>
>  \unprotect
>  \defineindentingmethod [\v!reset] {\indentfirstparagraphtrue
>                                     \parindent\zeropoint%AM was \zerocount
>                                     \chardef\indentingtoggle\zerocount}
>  \protect
>  Aditya

Thank you Aditya (and also thank you Wolfgang!) Your help is really appreciated!

Micke P
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