BIND and UNBIND can work on blocks not containing (just) words

[rebolbot]

Submitted by: Ladislav

There is no requirement that the BIND/UNBIND argument shall contain (just) words if it is a block.

I propose to change their help strings to:

{A word or a block (modified) (returned)}

>> source bind

bind: make native! [[
    "Binds words to the specified context."
    word [block! any-word!] "A word or block of words (modified) (returned)"
    context [any-word! any-object!] "A reference to the target context"
    /copy "Deep copy block before binding it"
    /only "Bind only first block (not deep)"
    /new "Add to context any new words found"
    /set "Add to context any new set-words found"
]]

>> source unbind
unbind: make native! [[
    "Unbinds words from context. (Modifies)"
    word [block! any-word!] "A word or block of words (modified) (returned)"
    /deep "Include nested blocks"
]]

^{CC - Data [ Version: r3 master Type: Bug Platform: All Category: Documentation Reproduce: Always Fixed-in:none ]}

[rebolbot]

Submitted by: BrianH

I think that we're going to want to add the paren! type eventually to the typespec for the word argument, so we should make room for it. Removing the extra "a" from the doc string should do it.

Some tweaks:

• Have the word argument doc string be "A word or block (modified) (returned)" so it's short enough to fit with paren!.
• Change the BIND/copy string to "Bind and return a deep copy of a block, don't modify original". That should be less ambiguous, and we have enough room for it.

Don't add the paren! type to the word typespec yet, because the code needs a bit of a tweak to not automatically set the block! type on the result. That's a separate fix (and ticket).

[rebolbot]

Submitted by: Ladislav

Pull request submitted with the requested change.