add wat

wat/README.md

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+observe surprising things about programming languages.

wat/set-e.sh

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+#!/usr/bin/env sh
+# run this shell script with one of these shells:
+# zsh, bash, dash, or (busybox) ash.
+set -e
+
+# false # this exits the shell immediately.
+# false || false # this exits as well.
+false && true # wait, what?
+! true # huh?
+
+fun() {
+    false # this *should* cause, the shell to exit, right...?
+    [ "$1" = 0 ]
+}
+
+if fun 0; then echo wat 1; fi
+if false; then echo nope; elif fun 0; then echo wat 2; fi
+
+i=0
+while fun $i; do i=1; done
+until fun $i; do i=0; done
+
+# ! fun 0 # this exits zsh, and only zsh.
+# (! (! fun 0)) # this exits bash, and only bash.
+fun 0 && echo wat 3 || echo nope
+fun 1 && echo nope
+fun 0 || echo nope
+
+echo aborting...
+fun 0 # let's get out of here.
+echo at least that works.

wat/upperlower.py

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+a = "ABCDEFGHIJKLMNOPQRSTUVWXYZÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖØÙÚÛÜÝÞŸŠŒŽ"
+b = "abcdefghijklmnopqrstuvwxyzàáâãäåæçèéêëìíîïðñòóôõöøùúûüýþÿšœž"
+
+# try this for fun, if breaking things is fun to you:
+a += "ß"
+b += "ß"
+
+print(a)
+print(b.upper())
+print(a.lower())
+print(b)
+
+print("TEST:")
+print(a == b.upper())
+print(b == a.lower())