NotebookToMarkdown: a DefinitionBox wrapping a TableText option/property grid is not recovered as a markdown table (falls to the inline path, no gridTable rule)

[mbahram]

Summary

The property/option-table cell styles round-trip to a markdown pipe table through a dedicated blockFor[..., BoxData[GridBox[...]]] := gridTable[rows] rule:

blockFor["2ColumnTableMod" | "3ColumnTableMod" | "TableNotes", BoxData[GridBox[rows_List, ___]]] := gridTable[rows]

A DefinitionBox cell holding the same kind of TableText grid (an option / property table, as a Tech Note carries) has no such rule, so it falls to the catch-all

blockFor[_String, c_] := tidy @ inlineMd[c]

and its GridBox is emitted through the generic inline path instead of gridTable — so it does not come back as a markdown table.

Repro (deterministic, kernel-only)

Get[".../NotebookToMarkdown.wl"];

NotebookToMarkdown @ Notebook[{
    Cell[BoxData[GridBox[{{"Option", "Default"}, {"\"Method\"", "Automatic"}}]], "DefinitionBox"]
}]

Expected: a | Option | Default | markdown table (as a 2ColumnTableMod grid of the same content produces). Actual: no pipe table — the DefinitionBox GridBox is routed through inlineMd, not gridTable.

Root cause

NotebookToMarkdown.wl defines the BoxData[GridBox[...]] → gridTable rule only for the 2ColumnTableMod / 3ColumnTableMod / TableNotes styles. DefinitionBox is not among them, so it reaches blockFor[_String, c_] := tidy @ inlineMd[c].

Fix

Add the mirror rule so a DefinitionBox property/option grid recovers as a markdown table like the other *TableMod grids:

blockFor["DefinitionBox", BoxData[GridBox[rows_List, ___]]] := gridTable[rows]