How to store new iWork (2013) documents in a flat file (for version control)?
The tool keynote-to-text gives a textual representation of a .key file. You can register it as the text converter for a Keynote file by adding to .gitconfig:
[diff "keynote"]
binary = true
textconv = /PATH/TO/KEYNOTE/keynote-to-text
And .gitattributes:
*.key diff=keynote
Then git diff provides useful output:
