Hi,
I think they are useful as other map break functions.
Now I can define them as follows. They can work in
`\int_step_inline:nnnn`. Although their definitions are a little weird.
\cs_new_nopar:Npn \int_step_break:
{ \__prg_map_break:Nn \scan_stop: { } }
\cs_new_nopar:Npn \int_step_break:n
{ \__prg_map_break:Nn \scan_stop: }
There are some more work in `\int_step_function:nnnN` case.
Maybe I missed something. Please let me know.
Regards,
--
Qing Lee