* factor::tests::recombines_factors: Minor refactor (skip useless bool)
* factor::tests: Check factorizations of powers of factored numbers
* factor::Factors: Add debug assertions to (Factor ^ Exponent)
* factor::tests: Drop obsoleted tests
`factor_correctly_recombines_prior_test_failures` was replaced with
`factor_2044854919485649` as this was the only test not subsumed.
* factor::tests::2044854919485649: Check the expected factorisation
Current implementation of the skip fields logic does not handle
multibyte code points correctly. It assumes each code point (`char`) is
one byte. If the skipped part of the input line has any multibyte code
points then this can cause fields not being skipped correctly (field
start index is calculated to be before it actually starts).
expand has one odd behavior that allows two format for tabstop
From expand --help
```
-t, --tabs=N have tabs N characters apart, not 8
-t, --tabs=LIST use comma separated list of tab positions
```
This patch use one `value_name("N, LIST")` for tabstop and
deal with above behavior in `parse_tabstop`.
Close#1795
* touch: use arggroup for sources
* tests/touch: add tests for multiple sources
* touch: turn macros into functions
* test/touch: fmt
* touch: constant for the sources ArgGroup
New tests in busybox are based on the fact that the function
appears in the usage of the busybox binary.
Because the tests are searching for an exact string they don't see
the function defined by coreutils.
By using the exact same string as busybox we can now also run the new
busybox tests
- added `-` as the default input, since `paste` reads stdin if no file
is provided
- `paste` also supports providing `-` multiple times
- added a test for it
The binary was rename from uutils to coreutils in that commit
52ae491fcd
but the makefile to run the busybox test wasn't updated
This commit update the makefile to use the correct binary name.
It also update the busybox to the 1.32.1 version and fix the makefile
to run all the busybox tests instead of stopping after the failed exe
