In previous MacOS versions, TextEdit used to open with a blank file by default. After upgrading to Mountain Lion (or the latest OS), TextEdit launches with a file picker by default (either for choosing to store the file in iCloud or for opening a local file).
If you want TextEdit to open a blank file by default and you don’t want to disable syncing documents and data, go to Terminal and run the following command:
defaults write -g NSShowAppCentricOpenPanelInsteadOfUntitledFile -bool false
To set this for TextEdit only:
defaults write com.apple.TextEdit NSShowAppCentricOpenPanelInsteadOfUntitledFile -bool false
Then, quit and reopen TextEdit to apply the changes.
To restore the original behavior, you must run:
defaults delete -g NSShowAppCentricOpenPanelInsteadOfUntitledFile
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