squiggly heredocs (#4628)

* squiggly heredocs

* style: lilypond-dev

Casks/java8.rb

@@ -84,7 +84,7 @@ cask 'java8' do
               ],
       rmdir:  '~/Library/Application Support/Oracle/'
 
-  caveats <<-EOS.undent
+  caveats <<~EOS
     This Cask makes minor modifications to the JRE to prevent issues with
     packaged applications, as discussed here:
 

Casks/libreoffice-still.rb

@@ -26,7 +26,7 @@ cask 'libreoffice-still' do
   binary shimscript, target: 'soffice'
 
   preflight do
-    IO.write shimscript, <<-EOS.undent
+    IO.write shimscript, <<~EOS
       #!/bin/sh
       '#{appdir}/LibreOffice.app/Contents/MacOS/soffice' "$@"
     EOS

Casks/lilypond-dev.rb

@@ -24,10 +24,10 @@ cask 'lilypond-dev' do
   preflight do
     binaries.each do |shimscript|
       # shim script (https://github.com/caskroom/homebrew-cask/issues/18809)
-      IO.write "#{staged_path}/#{shimscript}.wrapper.sh", <<-EOS.undent
+      IO.write "#{staged_path}/#{shimscript}.wrapper.sh", <<~EOS
-          #!/bin/sh
+        #!/bin/sh
-          exec '#{appdir}/LilyPond.app/Contents/Resources/bin/#{shimscript}' "$@"
+        exec '#{appdir}/LilyPond.app/Contents/Resources/bin/#{shimscript}' "$@"
-        EOS
+      EOS
     end
   end
 

Casks/tunnelblick-beta.rb

@@ -31,7 +31,7 @@ cask 'tunnelblick-beta' do
                 '~/Library/Preferences/net.tunnelblick.tunnelblick.plist',
               ]
 
-  caveats <<-EOS.undent
+  caveats <<~EOS
     For security reasons, #{token} must be installed to /Applications,
     and will request to be moved at launch.
   EOS

Casks/virtualbox-extension-pack-beta.rb

@@ -32,7 +32,7 @@ cask 'virtualbox-extension-pack-beta' do
                    sudo: true
   end
 
-  caveats <<-EOS.undent
+  caveats <<~EOS
     Installing this Cask means you have AGREED to the
     VirtualBox Personal Use and Evaluation License at
 

Casks/wine-devel.rb

@@ -26,7 +26,7 @@ cask 'wine-devel' do
                      ],
             delete:  '/Applications/Wine Devel.app'
 
-  caveats <<-EOS.undent
+  caveats <<~EOS
     #{token} installs support for running 64 bit applications in Wine, which is considered experimental.
     If you do not want 64 bit support, you should download and install the #{token} package manually.
   EOS

Casks/wine-staging.rb

@@ -27,7 +27,7 @@ cask 'wine-staging' do
                      ],
             delete:  '/Applications/Wine Staging.app'
 
-  caveats <<-EOS.undent
+  caveats <<~EOS
     #{token} installs support for running 64 bit applications in Wine, which is considered experimental.
     If you do not want 64 bit support, you should download and install the #{token} package manually.
   EOS