Hi Pat, Sorry for the long delay in replying to you. <div class="gmail_quote">On Thu, Apr 19, 2012 at 11:47 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="HOEnZb"><div class="h5"> </div></div> (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..... </blockquote><div> 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: </div><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? </blockquote><div> 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.</div> Raphaël </div>