Somehow the row calculation is off. The `row` argument to `table_search_cell`, the function where the error occurs equals 86913880, which is obviously far outside the table in question.

I defined a table-based macro in my preamble. It works perfectly well, but TeXmacs crashes when trying to select a piece of code with the keyboard or with the mouse (I am talking about the actual definition code in the preamble).

I am attaching the offending file. To reproduce, move your cursor just in front of "body", hold down "Shift" and move cursor up once or twice.

I reproduced it both under Linux and under windows

Instead of using the template you can also paste the following TeXmacs scheme code:

(assign "ltae"
        (macro "body"
          (tabular*
           (tformat
            (twith "table-valign" "T")
            (twith "table-min-cols" "1")
            (twith "table-max-cols" "1")
            (cwith "1" "-1" "1" "-1" "cell-halign" "l")
            (cwith "1" "-1" "1" "-1" "cell-lsep" "0ln")
            (cwith "1" "-1" "1" "-1" "cell-bsep" "0sep")
            (cwith "1" "-1" "1" "-1" "cell-tsep" "0sep")
            (arg "body")))))