missing space between text and a formula

missing space between text and a formula

[Bostjan Vesnicer]

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Hi,

I found the solution to my problem about missing space between text and 
a formula in MKII when using \indenting[next] (see 
http://archive.contextgarden.net/message/20080424.112935.a81d9346.en.html), 
however it seems to me that the proposed fix hasn't been applied to the 
ConTeXt distribution after that.

Bostjan

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Re: missing space between text and a formula

[Aditya Mahajan]

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On Tue, 11 Aug 2009, Bostjan Vesnicer wrote:

> Hi,
>
> I found the solution to my problem about missing space between text and a 
> formula in MKII when using \indenting[next] (see 
> http://archive.contextgarden.net/message/20080424.112935.a81d9346.en.html), 
> however it seems to me that the proposed fix hasn't been applied to the 
> ConTeXt distribution after that.

I do not completely understand what is happening here. Here is a modified 
example posted by Bostjan

%%%%%%%%%%%%%%%%%%%%%
\starttext
\startbuffer
Watch the space between this line and the formula.

\startformula
E = m c^2
\stopformula
\stopbuffer

\setupformulas[spacebefore=0pt]
\getbuffer

\setupformulas[spacebefore=big]
\setupindenting [yes, next, big]
\getbuffer

\setupformulas[spacebefore=0pt]
\getbuffer
\stoptext
%%%%%%%%%%%%%%%%%%%%%

MKII is getting it completely wrong, especially in the last case: the 
formula overwrites the text! I do not know what is going on. Wolfgang had 
posted a patch (see attachment) that adds a \ifindentfirstparagraph check 
before removing the baseline skip in \startdisplaymath, but I do not know 
what side effects it can have. Can someone who understand MKII indentation 
model please check this?

MKIV behaviour is (visually) correct.

Aditya

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diff --git a/strc-mat.mkii b/strc-mat.mkii
index 342f3f3..0e8bfca 100644
--- a/strc-mat.mkii
+++ b/strc-mat.mkii
@@ -409,11 +409,13 @@
      \beforedisplayspace
      \par
      \ifvmode
-        \prevdepth-\maxdimen % texbook pagina 79-80
-        % otherwise problems at the top of a page, don't remove:
-        \verticalstrut
-        \vskip-\struttotal
-        \vskip-\baselineskip
+        \ifindentfirstparagraph
+          \prevdepth-\maxdimen % texbook pagina 79-80
+          % otherwise problems at the top of a page, don't remove:
+          \verticalstrut
+          \vskip-\struttotal
+          \vskip-\baselineskip
+        \fi
      \fi
    \fi
    $$\setdisplaydimensions

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