On Mon, Jun 05, 2017 at 10:54:21AM +0800, subaochen wrote: > I mean, declaring longtable "center" is harmless with [c] property: > > > \begin{longtable}[c]{lcl} > ... > \end{longtable} > > > when the user choose "center" in longtable property dialog window. > > > I have not checked the lyx source code, But I think LyX maybe do some extra > check to intenionally omit [c] setting?
Ah I see. OK I would suggest you open an enhancement request on https://www.lyx.org/trac and post there: 1. a minimal example .lyx file 2. the LaTeX produced by that .lyx file 3. the LaTeX you believe should be produced Scott