Re: bash command alias has a problem in using brace.

[Chet Ramey]

On 8/27/21 9:47 PM, Dale R. Worley wrote:
> Hyunho Cho <mug896@gmail.com> writes:

> > but if i use alias then '>' prompt does not appear and default bash
> > prompt appears
> >
> > bash$ alias myalias='{ cat <<\@ > foo ;} 2> /dev/null'
> > bash$ myalias
> > bash$ 111
> > bash$ 222              # bash$ prompt
> > bash$ @

> I don't know the details, but it must have something to do with what
> event triggers the reading of the here-document.  That event isn't the
> execution of the command containing it, I don't think, but more like
> when the here-document-redirection is parsed. 

This is substantially correct. When the parser goes and collects the body
of the here-document, it's still parsing the contents of the alias.

--
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU    chet@case.edu    http://tiswww.cwru.edu/~chet/