Re: Solaris "sed" versus pre-v13 plpython tests

I wrote:
> I confirmed on the gcc farm's Solaris 11 box that the pattern
> doesn't work as expected with /usr/bin/sed:

> tgl(at)gcc-solaris11:~$ echo except foo, bar: | sed -e 's/except \([[:alpha:]][[:alpha:].]*\), *\([[:alpha:]][[:alpha:]]*\):/except \1 as \2:/g'
> except foo, bar:

> We could perhaps do this instead:

> $ echo except foo, bar: | sed -e '/^ *except.*,.*: *$/s/, / as /g'
> except foo as bar:

> It's a little bit more brittle, but Python doesn't allow any other
> commands on the same line does it?

Oh ... after a bit more experimentation, there's an easier way.
Apparently the real problem is that Solaris' sed doesn't handle
[[:alpha:]] (I wonder if this is locale-dependent?). I get
correct results after expanding it manually, eg

tgl(at)gcc-solaris11:~$ echo except foo, bar: | sed -e 's/except \([a-z][a-z.]*\), *\([a-z][a-zA-Z]*\):/except \1 as \2:/g'
except foo as bar:

We aren't likely to need anything beyond a-zA-Z and maybe 0-9,
so I'll go fix it that way.

regards, tom lane