#+Title: a collection of examples for Babel tests #+OPTIONS: ^:nil * =:noweb= header argument expansion :PROPERTIES: :ID: eb1f6498-5bd9-45e0-9c56-50717053e7b7 :END: #+source: noweb-example #+begin_src emacs-lisp (message "expanded") #+end_src #+begin_src emacs-lisp :noweb yes ;; noweb-yes-start <> ;; noweb-yes-end #+end_src #+begin_src emacs-lisp :noweb no ;; noweb-no-start <> ;; noweb-no-end #+end_src #+begin_src emacs-lisp :noweb tangle ;; noweb-tangle-start <> ;; noweb-tangle-end #+end_src * elisp forms in header arguments :PROPERTIES: :ID: 22d67284-bf14-4cdc-8319-f4bd876829d7 :var: prop=(+ 2 2) :END: #+begin_src emacs-lisp prop #+end_src #+results: : 4 * excessive id links on tangling :PROPERTIES: :ID: ef06fd7f-012b-4fde-87a2-2ae91504ea7e :END: ** no, don't give me an ID #+begin_src emacs-lisp :tangle no (message "not to be tangled") #+end_src ** yes, I'd love an ID :PROPERTIES: :ID: ae7b55ca-9ef2-4d30-bd48-da30e35fd0f3 :END: #+begin_src emacs-lisp :tangle no (message "for tangling") #+end_src * simple variable resolution :PROPERTIES: :ID: f68821bc-7f49-4389-85b5-914791ee3718 :END: #+source: four #+begin_src emacs-lisp (list 1 2 3 4) #+end_src #+begin_src emacs-lisp :var four=four (length four) #+end_src #+results: : 4 * multi-line header arguments :PROPERTIES: :ID: b77c8857-6c76-4ea9-8a61-ddc2648d96c4 :END: #+headers: :var letters='(a b c d e f g) #+begin_src emacs-lisp :var numbers='(1 2 3 4 5 6 7) (map 'list #'list numbers letters) #+end_src #+results: | 1 | a | | 2 | b | | 3 | c | | 4 | d | | 5 | e | | 6 | f | | 7 | g | * simple named code block :PROPERTIES: :ID: 0d82b52d-1bb9-4916-816b-2c67c8108dbb :END: #+source: i-have-a-name #+begin_src emacs-lisp 42 #+end_src #+results: : 42 #+results: i-have-a-name : 42 * Pascal's Triangle -- export test :PROPERTIES: :ID: 92518f2a-a46a-4205-a3ab-bcce1008a4bb :END: #+source: pascals-triangle #+begin_src emacs-lisp :var n=5 :exports both (defun pascals-triangle (n) (if (= n 0) (list (list 1)) (let* ((prev-triangle (pascals-triangle (- n 1))) (prev-row (car (reverse prev-triangle)))) (append prev-triangle (list (map 'list #'+ (append prev-row '(0)) (append '(0) prev-row))))))) (pascals-triangle n) #+end_src * calling code blocks from inside table :PROPERTIES: :ID: 6d2ff4ce-4489-4e2a-9c65-e3f71f77d975 :END: #+source: take-sqrt #+begin_src emacs-lisp :var n=9 (sqrt n) #+end_src * executing an lob call line :PROPERTIES: :results: silent :ID: fab7e291-fde6-45fc-bf6e-a485b8bca2f0 :END: #+call: echo(input="testing") #+call: echo(input="testing") :results vector #+call: echo[:var input="testing"]() #+call: echo[:var input="testing"]() :results vector #+call: echo("testing") #+call: echo("testing") :results vector This is an inline call call_echo(input="testing") embedded in prose. This is an inline call call_echo(input="testing")[:results vector] embedded in prose. #+call: lob-minus(8, 4) call_echo("testing") * exporting an lob call line :PROPERTIES: :ID: 72ddeed3-2d17-4c7f-8192-a575d535d3fc :END: #+source: double #+begin_src emacs-lisp :var it=0 (* 2 it) #+end_src The following exports as a normal call line #+call: double(it=0) Now here is an inline call call_double(it=1) stuck in the middle of some prose. This one should not be exported =call_double(it=2)= because it is quoted. Finally this next one should export, even though it starts a line call_double(it=3) because sometimes inline blocks fold with a paragraph. And, a call with raw results call_double(4)[:results raw] should not have quoted results. The following 2*5=call_double(5) should export even when prefixed by an = sign. * parsing header arguments :PROPERTIES: :ID: 7eb0dc6e-1c53-4275-88b3-b22f3113b9c3 :END: #+begin_src example-lang :session :results output :var num=9 the body #+end_src * conflicting blocks on export :PROPERTIES: :ID: 5daa4d03-e3ea-46b7-b093-62c1b7632df3 :END: #+results: a-list - a - b - c #+begin_src emacs-lisp :results wrap :exports both "code block results" #+end_src #+begin_src emacs-lisp :var lst=a-list :results list (reverse lst) #+end_src * using the =:noweb-ref= header argument :PROPERTIES: :ID: 54d68d4b-1544-4745-85ab-4f03b3cbd8a0 :END: #+begin_src sh :tangle yes :noweb yes :shebang #!/bin/sh <> #+end_src ** query all mounted disks #+begin_src sh :noweb-ref fullest-disk df \ #+end_src ** strip the header row #+begin_src sh :noweb-ref fullest-disk |sed '1d' \ #+end_src ** sort by the percent full #+begin_src sh :noweb-ref fullest-disk |awk '{print $5 " " $6}'|sort -n |tail -1 \ #+end_src ** extract the mount point #+begin_src sh :noweb-ref fullest-disk |awk '{print $2}' #+end_src