The 'Fragment' type was previously named 'Nodetype'. For clarity, name
the variables the same.
-BEGIN VERIFY SCRIPT-
sed -i 's/nodetype/fragment/g' src/script/miniscript.*
-END VERIFY SCRIPT-
Co-authored-by: Pieter Wuille <pieter.wuille@gmail.com>
The value it leaves on the stack depends on the last element on the
stack. However, we can't make sure this element is OP_1 (which would
give us the 'u' property) without the MINIMALIF rule.
MINIMALIF is only policy for P2WSH, therefore giving 'd:' the 'u'
property breaks consensus soundness: it makes it possible (by consensus
but not policy) for instance to satisfy a thresh() without satisfying
at least k of its subs.
This bug was found and reported by Andrew Poelstra.
More information about Miniscript can be found at https://bitcoin.sipa.be/miniscript/ (the
website source is hosted at https://github.com/sipa/miniscript/).
This commit defines all fragments, their composition, parsing from
string representation and conversion to Script.
Co-Authored-By: Antoine Poinsot <darosior@protonmail.com>
Co-Authored-By: Sanket Kanjalkar <sanket1729@gmail.com>
Co-Authored-By: Samuel Dobson <dobsonsa68@gmail.com>
