Regedit file format
Question
I would like to document the file format of regedit utility, so data can be merged into the registry.
From the command-line you can (silently) merge data from a batch file like this:
regedit /s file.reg
Exporting from a subkey goes like this:
regedit /e file.reg "HKEY_XX\key"
Solution
Remove keys and values by using the minus sign (-).
REGEDIT4
[-HKEY_CURRENT_USER\RemoveThisTree]
[HKEY_CURRENT_USER\RemoveValue]
"valueName"=-
References
Minus sign to delete mentioned here: MSKB310516: How to add, modify, or delete registry subkeys and values by using a .reg file (Archived here.)
Minus sign to delete, semicolon to comment and IF/ENDIF mentioned here: MSDN: Registry File (Compact 2013) (Archived here.)
OTHER TIPS
Documenting the .reg file format is really more Microsoft's job.
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