Re: [NTG-context] \mathextensible{"21FE}

In about.pdf on can see that U+21FE (rightarrowtriangle) is eligible for use with \mathextensible. When one look at the code for \mathextensible in "math-stc.mkvi", one can see there is a mechanism of fallback. So, since the character is implemented in "xits", there might be a way to have "\mathextensible{"21FE} to work... Chris On Thu, Apr 24, 2014 at 11:25 PM, Wolfgang Schuster wrote:

Am 24.04.2014 um 23:06 schrieb Elspeth McGullicuddy :

...

Thanks for the answer,

I wanted to use to use the mechanism described in "about.pdf" for extensible arrows with possibly text above, under... I've had a look at the "xits-math.tma". Though U+2194 and U+21FE are both arrows, U+2194 has an "horizontal part" field in contrast to U+21FE how hasn't. So I guess the "otf" font might be the culprit. And meddle with fonts is impossible a task.

For the present I will content myself with something like \math{\overset{f}{-\kern-1ex\rightarrowtriangle}} There might be a better way to achieve that in Context, I don't know.

\setupbodyfont[xits]

\starttext

\starttabulate[|l|lm|] \NC \tex{overleftarrow} \NC \overleftarrow{top} \NC\NR \NC \tex{overrightarrow} \NC \overrightarrow{text} \NC\NR \NC \tex{overleftrightarrow} \NC \overleftrightarrow{text} \NC\NR \NC \tex{overtwoheadleftarrow} \NC \overtwoheadleftarrow{text} \NC\NR \NC \tex{overtwoheadrightarrow} \NC \overtwoheadrightarrow{text} \NC\NR \NC \tex{texoverleftharpoondown} \NC \overleftharpoondown{text} \NC\NR \NC \tex{overleftharpoonup} \NC \overleftharpoonup{text} \NC\NR \NC \tex{overrightharpoondown} \NC \overrightharpoondown{text} \NC\NR \NC \tex{overrightharpoonup} \NC \overrightharpoonup{text} \NC\NR \TB \NC \tex{underleftarrow} \NC \underleftarrow{text} \NC\NR \NC \tex{underrightarrow} \NC \underrightarrow{text} \NC\NR \NC \tex{underleftrightarrow} \NC \underleftrightarrow{text} \NC\NR \NC \tex{undertwoheadleftarrow} \NC \undertwoheadleftarrow{text} \NC\NR \NC \tex{undertwoheadrightarrow} \NC \undertwoheadrightarrow{text} \NC\NR \NC \tex{underleftharpoondown} \NC \underleftharpoondown{text} \NC\NR \NC \tex{underleftharpoonup} \NC \underleftharpoonup{text} \NC\NR \NC \tex{underrightharpoondown} \NC \underrightharpoondown{text} \NC\NR \NC \tex{underrightharpoonup} \NC \underrightharpoonup{text} \NC\NR \stoptabulate

\stoptext

Wolfgang ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki!

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