Re: [Groff] `centre' keyword, `u' and `z' specifiers in tbl, \= in items

[Ralph Corderoy]

Hi Werner,

> > > Can someone please check whether the English spelling `centre'
> > > works as an alternative to the `center' keyword in UNIX tbl also?
> > > GNU tbl supports both.
> > 
> > No.
> 
> Thanks.  It shows another interesting feature: All keywords exist
> both in lowercase and uppercase versions!  Is this true with
> non-plan9 versions of troff also?

AIX 3.2.5's tbl also has upper and lower-case versions.  Here's part of
the output from strings.

    @(#)84
    1.6  com/tbl.d/t3.c, cmdtext, cmdtext320 6/1/91 15:40:59
    expand
    EXPAND
    center
    CENTER
    allbox
    ALLBOX
    doublebox
    DOUBLEBOX
    frame
    FRAME
    doubleframe
    DOUBLEFRAME
    linesize
    LINESIZE
    delim
    DELIM
    .nr %d \n(.s

Note, it doesn't have tab/TAB unlike Plan 9's source in which it is
placed after DOUBLEFRAME.

> Shall I take care of this (undocumented) feature?

groff's tbl accepts these options in a case-insensitive manner, unlike
Bell Labs which wants all upper or all lower case.  I guess it is this
which needs documenting?


Ralph.