+Table directive should support tab-delimited data, especially important since this is the format you will get if copy/pasting from an HTML table or spreadsheet (Gnumeric, OO Calc, Excel). Test case which fails:
+
[[!table format=dsv delimiter="\t" data="""
1 2
2 4
"""]]
+
+> They do work, but C-style backslash escapes aren't recognised,
+> so the syntax `delimiter="\t"` (as in your test case) looks
+> for the literal string `\t`. Replacing `\t` with a literal
+> tab character makes it work - here's a test (I changed the data
+> to make the table layout more obvious):
+>
+> [[!table format=dsv delimiter=" " data="""
+left 2
+2 right
+alpha beta
+"""]]
+>
+> So, I think this can be considered [[not_a_bug|done]]? --[[smcv]]
+
+>> I've clarified the documentation. --[[smcv]]