Content-Type: multipart/signed; boundary=Apple-Mail-2--581646373; micalg=sha1; protocol="application/pkcs7-signature"
Mime-Version: 1.0 (Apple Message framework v930.3)
References: <4982142F.6090004@morningstar2.co.uk>
            A<952160A8-75F7-458D-8430-807155BEF3A8@gmail.com>
            <8D5403E89293A448A409DDDD1531CE1802117806@defrm202.emea.corp.eds.com>
Message-ID:  <1244BE3C-C957-4421-BB17-F07C3032448B@gmail.com>
Date:         Fri, 30 Jan 2009 11:11:47 +1030
Reply-To: Mailing list for the LaTeX3 project
              <LATEX-L@LISTSERV.UNI-HEIDELBERG.DE>
Sender: Mailing list for the LaTeX3 project <LATEX-L@LISTSERV.UNI-HEIDELBERG.DE>
From: Will Robertson <wspr81@GMAIL.COM>
Subject: Re: AW: \tlist_head_iii:n "health warning"
To: LATEX-L@LISTSERV.UNI-HEIDELBERG.DE
In-Reply-To:  <8D5403E89293A448A409DDDD1531CE1802117806@defrm202.emea.corp.eds.com>
Precedence: list
Status: R

--Apple-Mail-2--581646373
Content-Type: text/plain;
	charset=US-ASCII;
	format=flowed;
	delsp=yes
Content-Transfer-Encoding: 7bit

On 30/01/2009, at 8:37 AM, Mittelbach, Frank wrote:

> I wonder if we might want the concept of _unsafe functions, ie those  
> that do not check but expect the programer to take care of that,  
> while by default all others will be safe. In certain applications I  
> could see speed/processing reasons for something like this. On the  
> other hand one can question how much this matters these days.
>
> opinions?

I wouldn't be unhappy to see these sort of _unsafe functions, but I  
would wonder how often they'd be necessary (especially in this case  
since padding an argument with quarks and testing if the retrieved  
head is \q_no_value or whatever neither breaks expandability nor takes  
very long...right?).

Let's keep it in mind when we change the tlist functions.

Will
--Apple-Mail-2--581646373
Content-Disposition: attachment;
	filename=smime.p7s
Content-Type: application/pkcs7-signature;
	name=smime.p7s
Content-Transfer-Encoding: base64

MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIIGITCCAtow
ggJDoAMCAQICECN4qE5kBXLk2f/jVDfSZPwwDQYJKoZIhvcNAQEFBQAwYjELMAkGA1UEBhMCWkEx
JTAjBgNVBAoTHFRoYXd0ZSBDb25zdWx0aW5nIChQdHkpIEx0ZC4xLDAqBgNVBAMTI1RoYXd0ZSBQ
ZXJzb25hbCBGcmVlbWFpbCBJc3N1aW5nIENBMB4XDTA5MDEyOTA1NDkxNVoXDTEwMDEyOTA1NDkx
NVowQjEfMB0GA1UEAxMWVGhhd3RlIEZyZWVtYWlsIE1lbWJlcjEfMB0GCSqGSIb3DQEJARYQd3Nw
cjgxQGdtYWlsLmNvbTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAL0BeSiAbKuqxeRN
p2qn/m8ZL+xawr/WXyPgEF0FipWgRe9l3sMXcFHokcUu0xOc97R7xkUsGcQ8EyybGHuWey6x7X1Y
xJZXnoAxqcaG+eREytoYGMIKs6BhEEogLVb2ERw3lQNVnOzanSFeGo8suMAN4zzCtqAjJiA1ph7h
1pksTgECYK5EiIZbFsB6zSDa8crNk404z1CfIA6YO8ezvjbDda+D0r8NU2tq9WS9F5IaG+bW71Ya
JegEcSZ+WF6Z+fs2MUMCLLu8n50Er0nuy4dxOmkdMRNfbeaM39dsEwjAAgcQnvPNmlJ215nZWQRH
49YowtSBOYUYq0ZylWRE6x8CAwEAAaMtMCswGwYDVR0RBBQwEoEQd3NwcjgxQGdtYWlsLmNvbTAM
BgNVHRMBAf8EAjAAMA0GCSqGSIb3DQEBBQUAA4GBABaRP8+PDYpKIRGlFgjs1HvMmJnqu4reSqp+
ulv0zJZIjIbX/sLbIsnecl9nycHfhubPdc+hDfpCqNZ2+NGQHwwoyuDl7KOdTY0BDPp3eJLio7ob
EYEr0H8rFwqfx2LWJ0G6nMhNEjLvs7sFKyriSpk++TWJnnsf86xai5m0tlOwMIIDPzCCAqigAwIB
AgIBDTANBgkqhkiG9w0BAQUFADCB0TELMAkGA1UEBhMCWkExFTATBgNVBAgTDFdlc3Rlcm4gQ2Fw
ZTESMBAGA1UEBxMJQ2FwZSBUb3duMRowGAYDVQQKExFUaGF3dGUgQ29uc3VsdGluZzEoMCYGA1UE
CxMfQ2VydGlmaWNhdGlvbiBTZXJ2aWNlcyBEaXZpc2lvbjEkMCIGA1UEAxMbVGhhd3RlIFBlcnNv
bmFsIEZyZWVtYWlsIENBMSswKQYJKoZIhvcNAQkBFhxwZXJzb25hbC1mcmVlbWFpbEB0aGF3dGUu
Y29tMB4XDTAzMDcxNzAwMDAwMFoXDTEzMDcxNjIzNTk1OVowYjELMAkGA1UEBhMCWkExJTAjBgNV
BAoTHFRoYXd0ZSBDb25zdWx0aW5nIChQdHkpIEx0ZC4xLDAqBgNVBAMTI1RoYXd0ZSBQZXJzb25h
bCBGcmVlbWFpbCBJc3N1aW5nIENBMIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDEpjxVc1X7
TrnKmVoeaMB1BHCd3+n/ox7svc31W/Iadr1/DDph8r9RzgHU5VAKMNcCY1osiRVwjt3J8CuFWqo/
cVbLrzwLB+fxH5E2JCoTzyvV84J3PQO+K/67GD4Hv0CAAmTXp6a7n2XRxSpUhQ9IBH+nttE8YQRA
HmQZcmC3+wIDAQABo4GUMIGRMBIGA1UdEwEB/wQIMAYBAf8CAQAwQwYDVR0fBDwwOjA4oDagNIYy
aHR0cDovL2NybC50aGF3dGUuY29tL1RoYXd0ZVBlcnNvbmFsRnJlZW1haWxDQS5jcmwwCwYDVR0P
BAQDAgEGMCkGA1UdEQQiMCCkHjAcMRowGAYDVQQDExFQcml2YXRlTGFiZWwyLTEzODANBgkqhkiG
9w0BAQUFAAOBgQBIjNFQg+oLLswNo2asZw9/r6y+whehQ5aUnX9MIbj4Nh+qLZ82L8D0HFAgk3A8
/a3hYWLD2ToZfoSxmRsAxRoLgnSeJVCUYsfbJ3FXJY3dqZw5jowgT2Vfldr394fWxghOrvbqNOUQ
Gls1TXfjViF4gtwhGTXeJLHTHUb/XV9lTzGCAxAwggMMAgEBMHYwYjELMAkGA1UEBhMCWkExJTAj
BgNVBAoTHFRoYXd0ZSBDb25zdWx0aW5nIChQdHkpIEx0ZC4xLDAqBgNVBAMTI1RoYXd0ZSBQZXJz
b25hbCBGcmVlbWFpbCBJc3N1aW5nIENBAhAjeKhOZAVy5Nn/41Q30mT8MAkGBSsOAwIaBQCgggFv
MBgGCSqGSIb3DQEJAzELBgkqhkiG9w0BBwEwHAYJKoZIhvcNAQkFMQ8XDTA5MDEzMDAwNDE0OFow
IwYJKoZIhvcNAQkEMRYEFMq79S+sL144+WZgIiy3ODn6WkkGMIGFBgkrBgEEAYI3EAQxeDB2MGIx
CzAJBgNVBAYTAlpBMSUwIwYDVQQKExxUaGF3dGUgQ29uc3VsdGluZyAoUHR5KSBMdGQuMSwwKgYD
VQQDEyNUaGF3dGUgUGVyc29uYWwgRnJlZW1haWwgSXNzdWluZyBDQQIQI3ioTmQFcuTZ/+NUN9Jk
/DCBhwYLKoZIhvcNAQkQAgsxeKB2MGIxCzAJBgNVBAYTAlpBMSUwIwYDVQQKExxUaGF3dGUgQ29u
c3VsdGluZyAoUHR5KSBMdGQuMSwwKgYDVQQDEyNUaGF3dGUgUGVyc29uYWwgRnJlZW1haWwgSXNz
dWluZyBDQQIQI3ioTmQFcuTZ/+NUN9Jk/DANBgkqhkiG9w0BAQEFAASCAQB+f3eyEUdx83TvhH4d
VHDgM2I7rHcPKabcyJ+mZ9FrhAtYGuQyxAx7VfP+OkoA5nIdMYiNg32sn7ZKHEDzVmMBbWM4Og4Z
o0IQGallwFpm3a+e9oH6T2sQAwuWhJNx++7ROGOZ3tXpWxT/+xsIecWN6XZC60Z3FfNDBu44YLXo
WOrcwJUd9nxcJUSYY6bOMfL+HR7NjU3LWbTa1wr3lvi54x+CwvKemqbEZeYAC8FCChWRyP0Ew53w
L0+lm+rYv+9ZXeiv4jxETszJ3aeK+Xn/7MSg+nzIM5PWA3KXLr4wGJ5hAHnIuO1yPL+ZSwzpHORo
P8uXEiAj6xkl4XuotTl5AAAAAAAA

--Apple-Mail-2--581646373--