"Eric Schulte" <schulte.e...@gmail.com> writes: > Hi Maurizio, > > The ip addresses in your table are being interpreted as source/reference > names which org-babel is trying to resolve. In order to differentiate > between strings and reference names, we either must surround all strings > in double quotes (as below) or we must end all references with "()" and > disallow any strings which end in "()".
Hi Eric, Thanks for the much better answer. I think my vote goes for your second option. In other words, :var x=blockname passes the string "blockname", whereas :var x=blockname() passes the result of evaluating a block called "blockname". One argument for this is that in order to pass arguments to a block being evaluated as a reference, users are already obliged to use the parenthetic function call syntax: :var x=blockname(arg1=val1) so demanding the parentheses in the absence of arguments is natural (and perhaps even serves to remind users of the possibility of passing arguments). Also I think that users will probably pass strings more often than they will pass the results of block reference evaluations, so interpreting :var=blockname as a string literal may also be justified by Least Surprise for naive users (e.g. apparently me...). Dan > Currently we are taking the > former approach, which means your table will require the following to > work... > > #+TBLNAME: system-host-ping :var host=system-hosts > | name | ip | ping | > |--------+------------------+----------------| > | host 1 | "192.168.10.200" | 192.168.10.200 | > | host 2 | "192.168.10.24" | 192.168.10.24 | > | host 3 | "192.168.42.24" | 192.168.42.24 | > #+TBLFM: $3='(sbe system-ping (ip $2))' > > #+source: system-ping > #+begin_src sh :var ip=0 > # This is what I eventually want > #ping -w 10 -c 1 -q $ip >/dev/null 2>&1 > #echo $? > > # Testing > echo $ip > #+end_src > > I'd be open to discussion on this issue. I suppose if reference > resolution fails we could try using the name as a string literal, but > that could lead to debugging nightmares... > > Cheers -- Eric > > Maurizio Vitale > <m...@cuma.i-did-not-set--mail-host-address--so-tickle-me> writes: > >> In the table/block pair below, I'm trying to pass an IP number to some >> shell code. It seems like in the table formula I can only have >> numbers. Is that right? >> >> #+TBLNAME: system-host-ping :var host=system-hosts >> | name | ip | ping | >> |-----------+----------------+--------| >> | host 1 | 192.168.10.200 | #ERROR | >> | host 2 | 192.168.10.24 | #ERROR | >> | host 3 | 192.168.42.24 | #ERROR | >> #+TBLFM: $3='(sbe system-ping (ip $2))' >> >> #+source: system-ping >> #+begin_src sh >> # This is what I eventually want >> #ping -w 10 -c 1 -q $ip >/dev/null 2>&1 >> #echo $? >> >> # Testing >> echo $ip >> #+end_src >> >> Any way to pass arbitrary strings? >> >> Thanks a lot, >> >> Maurizio >> >> >> >> >> _______________________________________________ >> Emacs-orgmode mailing list >> Please use `Reply All' to send replies to the list. >> Emacs-orgmode@gnu.org >> http://lists.gnu.org/mailman/listinfo/emacs-orgmode > > > _______________________________________________ > Emacs-orgmode mailing list > Please use `Reply All' to send replies to the list. > Emacs-orgmode@gnu.org > http://lists.gnu.org/mailman/listinfo/emacs-orgmode _______________________________________________ Emacs-orgmode mailing list Please use `Reply All' to send replies to the list. Emacs-orgmode@gnu.org http://lists.gnu.org/mailman/listinfo/emacs-orgmode
