<div class="gmail_quote">On Wed, Aug 1, 2012 at 5:06 PM, Pat Riehecky <<a href="mailto:riehecky@fnal.gov" target="_blank">riehecky@fnal.gov</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> <div class="im">On 08/01/2012 09:22 AM, Raphaël Pinson wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> Hi Pat, Sorry for the long delay in replying to you. </blockquote> </div> No worries, I've been busy too!<div><div class="h5"> <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> On Thu, Apr 19, 2012 at 11:47 PM, Pat Riehecky <<a href="mailto:riehecky@fnal.gov" target="_blank">riehecky@fnal.gov</a> <mailto:<a href="mailto:riehecky@fnal.gov" target="_blank">riehecky@fnal.gov</a>>> wrote: (Apologies for the return of this old thread, but the history seemed to help provide context) I've almost got this working the way I think it should and reading my site's krb5.conf. The only remaining issue I'm running into is with 'default_tgs_enctypes'. I'd love to get it into a sequence, but I can't seem to figure out how. The attached patch gets me really close, where I've got a sequence called 'type' under default_tgs_enctypes, but the extra part of the tree seems to be extra rather than useful, plus it seems to make setting those things a bit messy when it wasn't before - Was /files/etc/krb5.conf/libdefaults/default_tgs_enctypes = 'thing' my changes make /files/etc/krb5.conf/libdefaults/default_tgs_enctypes/type[x] = 'thing' which is not right..... The patch you attached leads to an ambiguity: $ augparse -I . krb5.aug Syntax error in lens definition krb5.aug:49.0-53.87:Failed to compile libdefaults krb5.aug:47.26-.71:exception: ambiguous iteration Iterated regexp: /([a-zA-Z0-9]+-[a-zA-Z0-9]+-[a-zA-Z0-9]+)([ \t,]*)/ 'A-A-AAA-A-A' can be split into 'A-A-A|=|AA-A-A' and 'A-A-AA|=|A-A-A' Iterated lens: krb5.aug:47.26-.70: </blockquote></div></div> Hmmm, this is quite the puzzle. When one value is specified ('A-A-A') it is followed by a new line, read terminates, no problem. When multiples are set they are delimited by spaces, tabs, commas, or a combination of all three. However, the one at the end may or may not have a trailing delimiter. So I'm not sure I can enforce delimiters to separate the items. Currently the third item ('A-A-B', the B) seems to be limited to 3 or 4 characters with a minimum of 3, but it appears that a smaller one is possible. Grumble.... All of these appear to be valid entries: rc4-hmac arcfour-hmac arcfour-hmac-md5 aes128-cts des3-cbc-sha1 rc4-hmac des-cbc-md5 des-cbc-crc Can augeas do word boundaries? Most of my regex is perl style rather than POSIX That should solve the ambiguity but my googling is only turning up perl style....<div class="im"> </div></blockquote><div> I think what you want is Build.opt_list (see all lenses using it, there's many): Build.opt_list enctype_re valsep See lenses/build.aug for the doc. </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="im"> <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> If I may ask three questions: So what can I do to get the sequence to populate when there are multiple items, but not when there are not? And how do I use the regex match for the sequence name? Is my attempt at a fix even on the right track? If you mean to generate an array only where there is more than one element, and use a fix value otherwise, dynamically, then it's a rather bad idea, since it will make it hard to add a second value to an existing unique one. However, if supporting arrays vs single values is linked to specific keys, they you could explicitely split the cases to have a lens for array entries and another lens for simple entries. This is already done in quite a few modules. </blockquote></div> I'll look more closely into the second option here. May I request a module to pattern my code after? </blockquote><div> Sure, see sshd.aug which uses array_entry and other_entry for example, or logrotate.aug which has select_to_eol, value_to_eol, list_to_eol and flag_to_eol entries. </div></div> -- Raphaël Pinson Administrateur Systèmes & Réseaux Camptocamp France Savoie Technolac BP 352 48, avenue du Lac du Bourget 73372 Le Bourget du Lac, Cedex <a href="http://www.camptocamp.com" target="_blank">www.camptocamp.com</a>