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Re: AngleBracket[] -- serious bug?!

• To: mathgroup@smc.vnet.net
• Subject: [mg11579] Re: [mg11541] AngleBracket[] -- serious bug?!
• From: Sean Ross <seanross@worldnet.att.net>
• Date: Tue, 17 Mar 1998 10:43:00 -0500
• References: <199803141855.NAA09889@smc.vnet.net.> <350C4AA2.761F@worldnet.att.net>

A note about the AngleBracket[] question.

AngleBracket does not have its own heading in appendix A.10 or the
on-line master index.  It is mentioned in the description of
\[LeftAngle Bracket] and \[RightAngleBracket].

I tried various combinations and it apparently does not like any
non-numeric or non-symbolic arguments.  It doesn't even like spaces.  I
even wrote a little function:

anglebracket[x___]:=\[LeftAngleBracket]x\[RightAngleBracket]

anglebracket[] returned the same gpf error, but anglebracket[x] returned
<x>.

The lesson appears to be that AngleBracket requires an argument and that
the error trapping is poor in this instance.

• References:
  • AngleBracket[] -- serious bug?!
    • From: "Scott Morrison" <scott@morrison.fl.net.au>