I see your point, Hans. For what it's worth, that's the default for mixed Persian/English documents unless one uses a system that cannot do it. For instance, FarsiTeX and XePersian provide that as default behavior.

That said, I'm not asking for this to be the default. I only want to know how it can be achieved. The code will be put in my style file or module.

Is it possible to determine the direction of the first line of footnote block while typesetting the footnote rule? I imagine it should not be difficult in Lua. Note that this may be the leftover from a long footnote that started on some previous page.

--MHB

On Jan 3, 2016 5:26 PM, "Hans Hagen" <pragma@wxs.nl> wrote:
On 1/3/2016 8:58 PM, Mohammad Hossein Bateni wrote:
I just found out that
   \definenote[afootnote][rule={on,right}]
instead of
   \definenote[afootnote][rule=right]
works and places the footnote rule on the right-hand side.

Still wondering about how to get automatic right/left rules.

what do you mean with automatic ... the problem with mixed direction documents is that these things are part of the document design: dominant direction vs local direction and right now we don't have a clear model for that (if only because till now demands were always conflicting so what works as default for someone doesn't for someone else)

(i can imagine some modules that set up things)

On Sun, Jan 3, 2016 at 1:22 PM, Mohammad Hossein Bateni
<bateni@gmail.com <mailto:bateni@gmail.com>> wrote:

    Hi,

    This has been previously discussed on the list but I didn't find a
    resolution to the issue.  It might as well be my fault since I
    didn't go through the entire archive and I am needless to say new to
    CONTEXT.

    In a bidi text (Persian/English in my case), I would like the
    footnote rule to be placed on the right-hand side if and only if the
    first line of the footnote text is RTL.  Is there a way this
    information can be obtained within a user-defined rulecommand.
    Ideally I'd like a rule=autodir attribute for notes in addition to
    the current left & right.

    Speaking of which, the left & right rules do not seem to work, or I
    misunderstand their point.  When used (either left or right), the
    footnote rule disappears.

    \starttext

    \definenote[afootnote][paragraph=no,rule=right]

    \startalignment[r2l]
    righttoleft text\afootnote{\input ward }
    \input tufte
    \stopalignment

    \startalignment[l2r]
    lefttoright text\afootnote{\input ward}
    \input tufte
    \stopalignment

    \stoptext

    I see these defined in strc-not.mkvi
    <http://repo.or.cz/w/context.git/blob/HEAD:/tex/context/base/strc-not.mkvi> and
    still don't work with "% macros=mkvi" in the first line of the input
    file and when the file has extension mkvi.  Is this some issue of
    mkiv vs mkvi?  For what it's worth, I don't notice a reference to
    MKVI in the compilation output.

    Back to the main question, I can define my own rule as follows:

    \unprotect
    \def\myfootrule{%
      \ifvmode
           \dontleavehmode \hskip.8\hsize\blackrule
             [\c!color=\noteparameter\c!rulecolor,
              \c!width=.2\hsize,
              \c!height=\noteparameter\c!rulethickness,
              \c!depth=\zeropoint]%
           \endgraf
           \kern\strutdepth
         \fi}
    \protect

    Then I can use

    \definenote[afootnote][paragraph=no,rule=command,rulecommand=\myfootrule]

    to get a footnote rule on the right-hand side.  If I can figure out
    whether the first line of the footnote text is RTL or LTR, an
    if-statement can do the trick I want.

    Somewhat related to this, I was wondering whether it's possible to
    define two note commands, say \footnote and \afootnote, that use the
    same counter but are otherwise completely different.

    I use TeXLive 2015 on Mac OS X,
              CONTEXT 2015.05.18 12:26, and
              LuaTeX, Version beta-0.80.0 (TeX Live 2015) (rev 5238).

    Thanks a lot!
    —MHB




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                                          Hans Hagen | PRAGMA ADE
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