resolve-chars is being used by ::vgcode::dump-configure-PathCanvas, ::vgcode::dump-configure-Canvas.
resolve-chars is being used by ::vgfile::regifc clients.
Example 9.2. ::vgfile::regifc using resolve-chars
...
variable _qifc;
set _openifc \
[protoifc $file {%s}];
set _qifc \
[::format \
[vgcode::resolve-chars $_openifc \\ \+ \* \$ \\
[ \] \{ \} \( \)] {(.*)}];