UNPROTECT/words object!

[Siskin-Bot]

Submitted by: BrianH

I have already run into situations where you would want to prohibit adding new words to an object, even if you want to allow changes to the existing words in the object. To deal with that UNPROTECT/words could be supported for an object! value.

UNPROTECT object! would unprotect the object and its words, but not their values. UNPRODUCT/deep object! would unprotect the object, its words, and their values. UNPROTECT/words object! would only unprotect the words of an object, but not the object itself or the values of the words. UNPROTECT/words/deep object! would also unprotect any values assigned to the words, but still not unprotect the object itself.

This ticket is split off of #1012.

; For this value of o: 
>> protect/deep o: object [a: 10 b: [20]] 

; To allow adding words to o, and allow modification of words already in o, but not affect their values: 
>> unprotect o 
; To allow modification of words already in o, but not affect their values or the object itself: 
>> unprotect/words o 
; To allow modification of words already in o and their contents, but not affect the object itself: 
>> unprotect/words/deep o
; To allow adding words to o, and allow modification of words already in o or their values:
>> unprotect/deep o

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^{Imported from: CureCode [ Version: alpha 65 Type: Wish Platform: All Category: n/a Reproduce: Always Fixed-in:none ]
Imported from: metaeducation#1015}

Comments:

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Rebolbot mentioned this issue on Jan 12, 2016:
set system can crash
UNPROTECT /unlock option
PROTECT overprotects objects
SYSTEM/MODULES needs access controls, similar to SECURE
PROTECT/HIDE returns the value it is meant to hide
Loophole to add words to modules after creation -- uses BIND? and SELF

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Rebolbot added Type.wish and Status.important on Jan 12, 2016

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[Oldes]

Implemented in the Oldes/Rebol3@1e55b65