different output for the same file

[William F Hammond]

David Carlisle <d.p.carlisle at gmail.com> writes:

> . . .
> luatex produces
>
> Missing character: There is no ̧ (U+0327) in font
> [lmroman10-regular]:+tlig;!
>
> as latin modern doesn't have the combining cedilla either
>
> xelatex gives the same warning.

In xelatex if I use

\usepackage{fontspec}
\setmainfont{Latin Modern Roman}

and if I use either U+0105 (small 'a' with ogonek)
or if I use 'a' followed by U+0328 (the combining character
for ogonek) rather than U+0327, then it works.

Note: emacs balks if I try to use U+0327 as a combining
character with 'a' but merges 'a' with U+0328 properly.

Best,

          -- Bill