iTerm profile switch

src/drafts/haskell-design-pattern-in-clojure/index.org

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+#+TITLE: Haskell Design Pattern in Clojure
+#+SUBTITLE: Some classical haskell tricks equivalent in Clojure
+#+AUTHOR: Yann Esposito
+#+EMAIL: yann@esposito.host
+#+DATE: [2019-11-07 Thu]
+#+KEYWORDS: programming
+#+DESCRIPTION: LISP to simulate Haskell
+#+OPTIONS: auto-id:t
+
+#+begin_notes
+TL;DR: Some clever Haskell trick can in fact be simulated quite efficiently
+with Clojure.
+#+end_notes
+
+* Monads
+:PROPERTIES:
+:CUSTOM_ID: monads
+:END:
+
+#+begin_src haskell
+  fullName :: Maybe Text -> Maybe Text -> Maybe Text
+  fullName firstName lastName = do
+      x <- firstName
+      y <- lastName
+      result <- return (x <> y)
+
+  ask :: IO (Maybe Text)
+  ask = do
+    l <- readLine
+    return $ if null l then Nothing else Just l
+
+  askName <- fullName <$> ask "What is your first name?"
+                      <*> ask "What is your last name?"
+#+end_src

src/posts/0007-switch-iterm-profile-catalina/index.org

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+#+TITLE: Catalina iTerm Theme switch
+#+AUTHOR: Yann Esposito
+#+EMAIL: yann@esposito.host
+#+DATE: [2019-11-10 Sun]
+#+KEYWORDS: self-hosting, chat, irc
+#+DESCRIPTION: Small script to change the profile of iTerm in sync with macOS preferences
+#+OPTIONS: auto-id:t toc:t
+
+* The script
+:PROPERTIES:
+:CUSTOM_ID: the-script
+:END:
+
+For the script to work you need to have two iTerm profiles, one named
+=Dark= and the other one =Light=. Just go to =Preferences= then =Profiles= then
+=Duplicate profile=.
+
+I use =fish= but you can easily adapt that in your =.bashrc=,
+=.bash_profile= etc...
+
+Here is what I have in  my =~/.config/fish/config.fish=:
+
+#+begin_src fish
+  function setItermProfile
+      echo -ne "\033]50;SetProfile=$argv\a"
+  end
+
+  function sync_appearance
+
+      set -x MacOSThemeAutoSwitch \
+          (defaults read -g AppleInterfaceStyleSwitchesAutomatically 2>/dev/null)
+      test -z $MacOSThemeAutoSwitch; and set -x MacOSThemeAutoSwitch 0
+
+      set -x MacOSTheme (defaults read -g AppleInterfaceStyle 2>/dev/null)
+      test -z $MacOSTheme; and set -x MacOSTheme 'nil'
+
+      # for debug purpose only
+      # echo $MacOSThemeAutoSwitch
+      # echo $MacOSTheme
+
+      if test -n $ITERM_PROFILE # check if we are using iTerm2
+          switch $MacOSThemeAutoSwitch
+              case 1
+                  switch $MacOSTheme
+                      case 'nil'
+                          setItermProfile Light
+                      case '*'
+                          setItermProfile Dark
+                  end
+              case 0
+                  switch $MacOSTheme
+                      case 'Dark'
+                          setItermProfile Dark
+                      case 'Light'
+                          setItermProfile Light
+                      case 'nil'
+                          setItermProfile Light
+                  end
+          end
+      end
+  end
+
+  if status --is-login
+      if status --is-interactive
+          sync_appearance
+      end
+  end
+#+end_src
+
+If the appearance change, you can call =sync_appearance= function in your
+shell to sync with the OS dark/light appearance.