git - What do all the changes to .xuserstate and .xcscheme files represent? -

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whenever check in changes os x app xcode 4 projects git, lot of lines of files these changed practically every commit

.../userinterfacestate.xcuserstate | 3927 ++++++++++++++++++++ .../test.xcuserdatad/xcschemes/deployment.xcscheme | 72 + .../test.xcuserdatad/xcschemes/hush.xcscheme | 76 + .../xcschemes/xcschememanagement.plist

is stuff necessary put under version control? changes *.xcuserstate clutter output of git log -p much.

here post describes can safely put in ignore files. looks can safely ignore of them.

here few others posts:
post 2
post 3
post 4


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