[Emacs] Whitespace, move header up
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@ -508,7 +508,7 @@ programming language, so here it is.
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In this category, only the ~epub~ and ~pdf~ layers are enabled without any
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special configuration, so I can read these files from Emacs directly.
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#+BEGIN_SRC emacs-lisp
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epub pdf
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epub pdf
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#+END_SRC
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**** Elfeed
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@ -1443,6 +1443,93 @@ in Elisp code.
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Almost all of my code snippets will be prefixed by either my name or the name of
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the package or layer they are part of, unless they are an explicit overwrite of
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a function that already exists.
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*** Elisp Utilities and Predicates
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:PROPERTIES:
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:CUSTOM_ID: User-Configuration-Custom-functions-macros-and-variables-Predicates-5598df46
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:END:
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**** ~phundrak-filter~
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:PROPERTIES:
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:CUSTOM_ID: User-Configuration-Custom-functions-macros-and-variables-Elisp-Utilities-and-Predicates-phundrak-filter-2d3c5a5b
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:END:
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#+name: elisp-phundrak-filter
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#+BEGIN_SRC emacs-lisp
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(defun phundrak-filter (fn list)
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"Filter `LIST' according to the predicate `FN'.
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All elements from `LIST' that do not satisfy the predicate `FN'
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will be left out of the result, while all elements that do
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satisfy it will be included in the resulting list. This function
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also preserves the relative position between elements that
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satisfy the predicate."
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(declare (pure t) (side-effect-free t))
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(when list
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(let ((rest (phundrak-filter fn
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(cdr list))))
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(if (funcall fn
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(car list))
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(cons (car list) rest)
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rest))))
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#+END_SRC
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**** ~phundrak-all?~
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:PROPERTIES:
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:CUSTOM_ID: User-Configuration-Custom-functions-macros-and-variables-phundrak-all-0655600c
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:END:
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This function is inspired by dash’s ~-all?~ function: it will test all the
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elements of the list ~seq~ against the predicate ~fn~ which should return either
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~t~ or ~nil~. If all of them return something else than ~nil~, then it is a
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success, otherwise it is a failure. Note that empty lists will always return
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~t~.
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#+BEGIN_SRC emacs-lisp
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(defun phundrak-all? (fn seq)
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"Check if all members of `SEQ' satisfy predicate `FN'. Note that
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it will return t if `SEQ' is nil."
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(declare (pure t) (side-effect-free t))
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(if seq
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(and (funcall fn (car seq))
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(phundrak-all? fn (cdr seq)))
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t))
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#+END_SRC
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**** ~phundrak-none?~
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:PROPERTIES:
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:CUSTOM_ID: User-Configuration-Custom-functions-macros-and-variables-phundrak-none-463dee26
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:END:
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In the same vein as ~phundrak-all?~, ~phundrak-none?~ checks if all elements of
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~seq~ do not satify the predicate ~fn~. Again, if the list is empty, it will
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return ~t~.
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#+name: elisp-phundrak-none
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#+BEGIN_SRC emacs-lisp
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(defun phundrak-none? (fn seq)
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"Check if all members of `SEQ' do not satisfy predicate `FN'.
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Note that it will return t if `SEQ' is nil."
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(declare (pure t) (side-effect-free t))
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(if seq
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(and (not (funcall fn (car seq)))
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(phundrak-none? fn (cdr seq)))
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t))
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#+END_SRC
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**** ~phundrak-zip~
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:PROPERTIES:
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:CUSTOM_ID: User-Configuration-Custom-functions-macros-and-variables-Elisp-Utilities-and-Predicates-phundrak-zip-8a49b20f
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:END:
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#+name: elisp-phundrak-zip
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#+BEGIN_SRC emacs-lisp
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(defun phundrak-zip (&rest lists)
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"Zip `LISTS' together.
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Be aware only the amount of elements of the smallest list will be zipped."
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(declare (pure t) (side-effect-free t))
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(when lists
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(let ((lists (if (= 1 (length lists)) ; only one element => a list of lists was passed
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(car lists)
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lists)))
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(when (phundrak-none? 'null lists)
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(cons (mapcar 'car lists)
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(phundrak-zip (mapcar 'cdr lists)))))))
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#+END_SRC
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*** Eshell Prompt-Related Functions
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:PROPERTIES:
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:CUSTOM_ID: User-Configuration-Custom-functions-macros-and-variables-Eshell-prompt-related-functions-79d07f21
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@ -1745,93 +1832,6 @@ argument. Here is how it is implemented:
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`(propertize ,$str 'face (list ,@$properties)))
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#+END_SRC
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*** Elisp Utilities and Predicates
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:PROPERTIES:
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:CUSTOM_ID: User-Configuration-Custom-functions-macros-and-variables-Predicates-5598df46
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:END:
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**** ~phundrak-filter~
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:PROPERTIES:
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:CUSTOM_ID: User-Configuration-Custom-functions-macros-and-variables-Elisp-Utilities-and-Predicates-phundrak-filter-2d3c5a5b
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:END:
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#+name: elisp-phundrak-filter
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#+BEGIN_SRC emacs-lisp
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(defun phundrak-filter (fn list)
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"Filter `LIST' according to the predicate `FN'.
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All elements from `LIST' that do not satisfy the predicate `FN'
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will be left out of the result, while all elements that do
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satisfy it will be included in the resulting list. This function
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also preserves the relative position between elements that
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satisfy the predicate."
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(declare (pure t) (side-effect-free t))
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(when list
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(let ((rest (phundrak-filter fn
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(cdr list))))
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(if (funcall fn
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(car list))
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(cons (car list) rest)
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rest))))
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#+END_SRC
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**** ~phundrak-all?~
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:PROPERTIES:
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:CUSTOM_ID: User-Configuration-Custom-functions-macros-and-variables-phundrak-all-0655600c
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:END:
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This function is inspired by dash’s ~-all?~ function: it will test all the
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elements of the list ~seq~ against the predicate ~fn~ which should return either
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~t~ or ~nil~. If all of them return something else than ~nil~, then it is a
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success, otherwise it is a failure. Note that empty lists will always return
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~t~.
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#+BEGIN_SRC emacs-lisp
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(defun phundrak-all? (fn seq)
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"Check if all members of `SEQ' satisfy predicate `FN'. Note that
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it will return t if `SEQ' is nil."
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(declare (pure t) (side-effect-free t))
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(if seq
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(and (funcall fn (car seq))
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(phundrak-all? fn (cdr seq)))
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t))
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#+END_SRC
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**** ~phundrak-none?~
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:PROPERTIES:
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:CUSTOM_ID: User-Configuration-Custom-functions-macros-and-variables-phundrak-none-463dee26
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:END:
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In the same vein as ~phundrak-all?~, ~phundrak-none?~ checks if all elements of
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~seq~ do not satify the predicate ~fn~. Again, if the list is empty, it will
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return ~t~.
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#+name: elisp-phundrak-none
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#+BEGIN_SRC emacs-lisp
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(defun phundrak-none? (fn seq)
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"Check if all members of `SEQ' do not satisfy predicate `FN'.
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Note that it will return t if `SEQ' is nil."
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(declare (pure t) (side-effect-free t))
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(if seq
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(and (not (funcall fn (car seq)))
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(phundrak-none? fn (cdr seq)))
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t))
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#+END_SRC
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**** ~phundrak-zip~
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:PROPERTIES:
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:CUSTOM_ID: User-Configuration-Custom-functions-macros-and-variables-Elisp-Utilities-and-Predicates-phundrak-zip-8a49b20f
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:END:
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#+name: elisp-phundrak-zip
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#+BEGIN_SRC emacs-lisp
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(defun phundrak-zip (&rest lists)
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"Zip `LISTS' together.
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Be aware only the amount of elements of the smallest list will be zipped."
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(declare (pure t) (side-effect-free t))
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(when lists
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(let ((lists (if (= 1 (length lists)) ; only one element => a list of lists was passed
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(car lists)
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lists)))
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(when (phundrak-none? 'null lists)
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(cons (mapcar 'car lists)
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(phundrak-zip (mapcar 'cdr lists)))))))
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#+END_SRC
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*** ~phundrak-blog-publish~
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:PROPERTIES:
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:CUSTOM_ID: User-Configuration-Custom-functions-macros-and-variables-phundrak-blog-publish-99c96b2d
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