Re: why fail , [[ $sep$*$sep == $sep--$sep ]]

[alex xmb sw ratchev]

On Sat, Feb 17, 2024, 16:44 alex xmb sw ratchev <fxmbsw7@gmail.com> wrote:

>
>
> On Sat, Feb 17, 2024, 16:37 alex xmb sw ratchev <fxmbsw7@gmail.com> wrote:
>
>>
>>
>> On Sat, Feb 17, 2024, 16:14 Greg Wooledge <greg@wooledge.org> wrote:
>>
>>> On Sat, Feb 17, 2024 at 04:07:22PM +0100, alex xmb sw ratchev wrote:
>>> > set aa bb cc -- dd ; f=$'\1' IFS=$f ; [[ $f$*$f == "$f--$f" ]] && echo
>>> ye
>>> >
>>> > it says no ye
>>>
>>> Why would you think $* and -- would be equivalent, when you've got 5
>>> positional parameters?
>>>
>>
>> i used the old logic , sep sep-item-list sep matching sep data sep
>>
>> the -- is for arg sep , cat1.. -- cat2 -- cat3 ( or cat1 cat2 cat3 )
>> it was for testing possible coding ways
>>
>
> small fix : bash script cat1.. -- cat2.. -- cat3..
> or
> bash script cat1 cat2 cat3 # without multi
>
> i mean for arg parsing
> i wanna support -- style multi category args , and in the args possible
> kinds
> 1 input dir ( dir cause programs purpose )
> 2 '<' or '<0' for nextarg is file list , one per \n one per \0
>

umm scripts filename is
xmb.cpnewfilenames

to have a all_files dir , a smaller_dir , and output_additions_dir , to cp
the missing files to
for file sync
.. with the addition of multi type args and multi dirs instead just one
.. :))

..
>
> unicorn:~$ set aa bb cc -- dd
>>> unicorn:~$ f=$'\1' IFS=$f
>>> unicorn:~$ printf %s "$*" | hd
>>> 00000000  61 61 01 62 62 01 63 63  01 2d 2d 01 64 64
>>> |aa.bb.cc.--.dd|
>>> 0000000e
>>> unicorn:~$ printf %s "$f$*$f" | hd
>>> 00000000  01 61 61 01 62 62 01 63  63 01 2d 2d 01 64 64 01
>>> |.aa.bb.cc.--.dd.|
>>> 00000010
>>> unicorn:~$ printf %s "$f--$f" | hd
>>> 00000000  01 2d 2d 01                                       |.--.|
>>> 00000004
>>>
>>
>> i think in ur example would been 012d2d01
>> if 2d is -
>>
>>>