Re: [NTG-context] dorecurse problem

20 Jan 2017

      On 2017-01-20 11:42, Otared Kavian wrote:
...
Hi Hans,
Unfortunately your workaround with \getbuffer does not produce the correct page: it gives only a blank page.
Thanks for your attention: OK
...
On 20 Jan 2017, at 10:08, Hans Hagen  wrote:
On 1/20/2017 8:59 AM, Aditya Mahajan wrote:
...
On Thu, 19 Jan 2017, Rik Kabel wrote:
...
ConTeXters,
When \dorecurse is active in the following MWE, the lines of text are
overprinted. At least, this is the case for me, please confirm it for
yourself. When \dorecurse is disabled, the lines print as they should,
separately. Please tell me what I am doing wrong with this, if
anything, and how to fix it. (Running ConTeXt  ver: 2017.01.17 17:37
MKIV beta fmt: 2017.1.19 on Win10 x64. There are no errors in the log.)
This has nothing to do with \dorecurse, but due to the fact that the
argument of \dorecurse or any macro is parsed before the catcode changes
introduced by \startlines come into effect. Here is a simpler example
demonstrating similar behavior:
\def\test#1{#1}
\starttext
\test{Something
\startlines
Line one
Line two
\stoplines}
\stoptext
Depending on what you want to do, it should be possible to come up with
a workaround.
\startbuffer
  \startstandardmakeup
    \setlayerframed
      [blocks]
      [preset=lefttop,
       frame=off,
       align=right]{
      \startlines
        Line one on the left
        Line two on the left
      \stoplines
    }
    \setlayerframed
      [blocks]
      [preset=righttop,
       frame=off,
       align=flushright]{
      \startlines
        thgir eht no eno eniL
        thgir eht no owt eniL
      \stoplines
    }
  \stopstandardmakeup
\stopbuffer
\dorecurse{1}{
        \getbuffer
    }
___________________________________________________________________________________
Hans and Aditya,

Thank you for the explanation and the workaround.

Otared,

I am not sure what you are doing, but if you are using only the code 
snippet that Hans posted, you will get a blank page. You have to define 
the layer and page background in addition to Hans' snippet.

---
Rik