Re: ESS code-folding?

>>>>> Westerland, Maggie via ESS-help 
>>>>>     on Thu, 17 Aug 2023 13:15:39 +0000 writes:

    > Ah, I see how this is working now. This looks like a suitable solution for me!
    > Thanks all,
    > Maggie

    > --
    > Maggie Westerland, MA
    > Statistical Programmer
    > BUMC, Dept of Rheumatology
    > she/her


Great --- note that this has been part of Emacs (independently
of ESS) for"ever" (~ 30 years I guess).

Martin


    > From: Karlo Guidoni Martins <[email protected]>
    > Sent: Thursday, August 17, 2023 7:29 AM
    > To: Sparapani, Rodney <[email protected]>
    > Cc: Westerland, Maggie <[email protected]>; ess-help ([email protected]) <[email protected]>
    > Subject: Re: [ESS] ESS code-folding?

    > With that code snippet:
    > ### acts as the first level of the folding, #### as second level and so on.

    > Check out if the outline-minor-mode is activated after evaluating that code snippet as well. The TAB key open and close the folding by default, just like org-mode.

    > In my case, this works like this:

    > Without code folding
    > ### test1
    > test1 = c(1, 2)
    > #### test2
    > test2 = c(1, 2)

    > With code folding
    > ### test1...
    > #### test2...





    > On Wed, 16 Aug 2023 at 16:06 Sparapani, Rodney <[email protected]<mailto:[email protected]>> wrote:
    > Hi Karlo:

    > This is very interesting.  But, I must not be doing it right.
    > Do you have a simple example of how to use this to do case-folding?
    > Thanks

    > --
    > Rodney Sparapani, Associate Professor of Biostatistics, He/Him/His
    > Vice President, Wisconsin Chapter of the American Statistical Association
    > Institute for Health and Equity, Division of Biostatistics
    > Medical College of Wisconsin, Milwaukee Campus


    > From: Karlo Guidoni Martins <[email protected]<mailto:[email protected]>>
    > Date: Wednesday, August 16, 2023 at 1:02 PM
    > To: Sparapani, Rodney <[email protected]<mailto:[email protected]>>
    > Cc: ess-help ([email protected]<mailto:[email protected]>) <[email protected]<mailto:[email protected]>>
    > Subject: Re: [ESS] ESS code-folding?
    > ATTENTION: This email originated from a sender outside of MCW. Use caution when clicking on links or opening attachments.
    > ________________________________
    > hi!

    > this works fine for me:

    > ;;; BEG
    > ;;; outline-(minor)-mode
    > (setq outline-minor-mode-highlight 'override) ; emacs28
    > (setq outline-minor-mode-cycle t)

    > ;;; outline for ess-mode
    > (add-hook 'ess-mode-hook
    > #'(lambda ()
    > (outline-minor-mode)
    > (setq-local outline-regexp "\\(^#\\{3,7\\} \\)\\|\\(^[a-zA-Z0-9_\.]+ ?<- ?function(.*{\\)<file://(%5e%23/%7b3,7/%7d%20/)/|/(%5e%5ba-zA-Z0-9_/.%5d+%20%3f%3c-%20%3ffunction(.*%7b/)>")
    > (setq-local outline-regexp "\\(^#\\{3,7\\} \\)<file://(%5e%23/%7b3,7/%7d%20/)>")
    > (defun outline-level ()
    > ;; ## continues only as a comment.
    > (cond ((looking-at "^### ") 1) ; first level
    > ((looking-at "^#### ") 2) ; second level
    > ((looking-at "^##### ") 3) ; and so on...
    > ((looking-at "^###### ") 4)
    > ((looking-at "^####### ") 5)
    > ((looking-at "^######## ") 6)
    > ((looking-at "^[a-zA-Z0-9_\.]+ ?<- ?function(.*{") 3)
    > (t 1000)))
    > (outline-hide-body)))

    > ;;; force outline height
    > (custom-set-faces
    > '(outline-1 ((t (:height 1.100 :weight bold))))
    > '(outline-2 ((t (:height 1.075 :weight bold))))
    > '(outline-3 ((t (:height 1.050 :weight bold))))
    > '(outline-4 ((t (:height 1.025 :weight bold))))
    > '(outline-5 ((t (:height 1.000 :weight bold))))
    > '(outline-6 ((t (:height 1.000 :weight bold))))
    > '(outline-7 ((t (:height 1.000 :weight bold))))
    > '(outline-8 ((t (:height 1.000 :weight bold))))
    > )
    > ;;; END


    > On 16 Aug 2023 14:30:02, "Sparapani, Rodney via ESS-help" <[email protected]<mailto:[email protected]>> wrote:
    > Hi Gang:

    > One of my student’s asked this question.

    > Any resources/knowledge on code folding? in RStudio ‘####’ creates a collapsible section. Came across hideshow-org<https://urldefense.com/v3/__https:/melpa.org/*/hideshow-org__;Iw!!H8mHWRdzp34!5RPr9v2ZhWFZvGqgU1l_SCB3m8RiGAGo3z3tOZJeYnGOEM1PJSipOO32pr70Qd7JRbtycMb_EwhMdNuJ$> but I don’t want to only be able to use it in org mode.

    > Something like

    > Without code folding
    > #### test ####
    > test = c(1, 2)
    > ####

    > With code folding
    > #### test ####
    > ####

    > Any ideas?
    > --
    > Rodney Sparapani, Associate Professor of Biostatistics, He/Him/His
    > Vice President, Wisconsin Chapter of the American Statistical Association
    > Institute for Health and Equity, Division of Biostatistics
    > Medical College of Wisconsin, Milwaukee Campus


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