Regtool can't set default value?

[David Dyer-Bennet]

This does it:

regtool add '/root/SystemFileAssociations/text/shell/edit/command'
regtool set '/root/SystemFileAssociations/text/shell/edit/command/' -s 
"$EDITWITHEMACS"

(If $EDITWITHEMACS is set to a suitable value)

On 9/28/2015 12:54, Brian Inglis wrote:
> David Dyer-Bennet <dd-b <at> dd-b.net> writes:
>
>>
>> I'm not sure I'm understanding this right.  I'm trying to duplicate a
>> manual setup that works (for making text files in general have an edit
>> right-click option that invokes emacsclientw).
>>
>> In that manual setup, (sorry, using cygwin path notation while referring
>> to regedit, of course in regedit the path shows in Windows notation)
>> I've set up /root/txtfile/shell/edit/command with a value named
>> "(Default)" of type REG_EXPAND_SQ whose data is a (windows-style of
>> course) path to emacsclientw.exe (plus some switches plus "%1" for the
>> file name at the end).  That works -- the right-click menu for a file
>> known to Windows as a txtfile (like foo.txt) has an "edit" entry, which
>> when clicked invokes emacsclientw.
>>
>> I'm trying to create this in a script using cygwin regtool.  I can
>> create a key of /root/txtfile/shell/edit with a value of command having
>> the right data -- but that of course does not work.  I can create a key
>> of /root/txtfile/shell/edit/command with *two* values named (Default),
>> the second of which is my value -- but that also does not work.  (And I
>> can't delete the first value (Default) even in regedit.)
>>
>> I clearly don't understand something about the data that Regedit
>> displays under the name (Default), and how to create, delete, get, and
>> set value to it.
>>
>> How do I create this simple scenario using regtool?  (It's not actually
>> emacs-specific, if you look at the default Windows registry for
>> /root/txtfile/shell/open/command you'll find a value named "(Default)"
>> of type REG_EXPAND_SZ giving a path to notepad.exe.  If I wanted to
>> produce that using regtool, how would I do that?)
>>
>> (If there's no way to do it with regtool, that's weird, and in
>> particular a huge deficit in regtool since configuring preferred
>> handling of various file-types seems like one of the things you'd really
>> want to be able to do.
>>
>> (It *ought* to be possible for my script to write a .reg file that it
>> then feeds to regedit as an alternative way to do it, and if I can't
>> make regtool work I'll try that, but I don't need suggestions about
>> that, at least not yet -- I know how to do that, but am currently trying
>> to understand regtool, and will only give up if we determine fairly
>> authoritatively that regtool can't do what I need.)
>
> Use regedit export and import and Cygwin ls /proc/registry as well as
> regtool list on your entries to compare what works and what doesn't.
> You will probably find that in your script you need to quote quotes (") and
> backslashes (\), possibly multiple times, to get the path strings set
> properly - exported .reg files contain backslashed quotes, so getting that
> working in a script requires extra backslashes and/or quotes.
> Testing scripts by running via bash -vx script can show useful info like
> substitution results.
> Somewhere I can't find just now documents that some tool(s) use "@" to name
> (Default) - it is not actually named "(Default)".
>
>
>
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