Expandable iteration on comma-separated and filename lists
Description
The bundle provides two packages: commado and filesdo. The
package commado provides the command \DoWithCSL:
\DoWithCSL{<cmd>}{<list>} applies an existing one-parameter
macro <cmd> to each item in a list <list> in which terms are
separated by commas. The package filesdo provides the command
\DoWithBasesExts: \DoWithBasesExts{<cmd>}{<bases>}{<exts>}
which runs the single parameter command <cmd> on each file
whose base and extension are respectively from the comma-
separated lists <bases> and <exts>. These 'loop'-like commands
are (themselves) entirely expandable. The packages rely on
packages plainpkg, and stacklet
