[Texmacs-dev] Inverted breve

[Miguel de Benito Delgado]

Dear list,

  how do you draw a wide arc above some text in math mode? I found no way and 
implemented an "inverted breve", for lack of a better name (see the attached 
patch against latest SVN) Was it necessary or is there already a way to do it? 
In case there isn't, is the name "invbreve" correct or should I rather choose 
"arc" or something like that?(especially since the arc has different curvature, 
angles and vertical offset…)

invbreve.diff
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Miguel de Benito.