[dev-context] Reversed alignment for left and right

Wolfgang Schuster schuster.wolfgang at gmail.com
Tue Oct 30 19:26:43 CET 2012

Am 30.10.2012 um 19:02 schrieb Hans Hagen <pragma at wxs.nl>:

> On 30-10-2012 18:48, Wolfgang Schuster wrote:
>> Hi Hans,
>> while for backwards compatibility you won’t change \setupalign[leftt|right] the current implementation makes it possible to change the behavior with a simple change in the code.
>> \unprotect
>> \newconstant\c_spec_align_state_method
>> %\setvalue{\??aligncommand\v!right          }{\c_spac_align_state_horizontal\plustwo  }
>> %setvalue{\??aligncommand\v!left           }{\c_spac_align_state_horizontal\plusthree}
>> \setvalue{\??aligncommand\v!right          }{\c_spac_align_state_horizontal\ifcase\c_spec_align_state_method\plustwo\else\plusthree\fi}
>> \setvalue{\??aligncommand\v!left           }{\c_spac_align_state_horizontal\ifcase\c_spec_align_state_method\plusthree\else\plustwo\fi}
> iirr we had something like that in mkii

I saw the old and new keywords for \setupalign in mkii but never checked what’s their purpose.

Because both keywords aren’t used in mkiv I had first the following two lines (before using \enablereversealignment) in my test file:

\setvalue{\??aligncommand\v!old            }{\c_spec_align_state_method\zerocount}
\setvalue{\??aligncommand\v!new            }{\c_spec_align_state_method\plusone}

>> \unexpanded\def\enablereversealignment{\c_spec_align_state_method\plusone}
> so who's helping users who put that in cont-usr.mkiv and have issues

How many users do know about this and the other runtime loaded files and use them?


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