Wapp

The documentation og `wapp-trim` states:

Command and variable substitutions only occur within "%html(...)", "%url(...)", "%qp(...)", "%string(...)", and "%unsafe(...)".

This is not true, command substitution does occur. This makes it implossible to include text which contains []'s.

The offending part of the code is the [subst -novariables] on line 80 and 91.

This works correctly with Tcl8.7.  For performance reasons, substitutions
still do occur when using Tcl8.6.  The documentation has been adjusted to
make note of this fact.