#2722: GetComponents places KadathThorn inside repos/KadathThorn instead of Cactus/repos/KadathThorn

Reporter: Zach Etienne Status: new Milestone: Version: Type: bug Priority: major Component:

Comment (by Roland Haas):

Grr. The issue is very confusing. It boils down to how `cd` acts. One would assume that it just passes its given path to the os’s `cwd` call. But no. That is not what is does. It tries to first contract the string (acts on `.../`). To get reproducible behaviour one must pass the `-P` option to a (POSIX confirming) `cd` command. See [https://unix.stackexchange.com/a/55715%5D(https://unix.stackexchange.com/a/5...) and [https://pubs.opengroup.org/onlinepubs/9699919799/utilities/cd.html%5D(https:...) Otherwise (depending on the shell that actually provides `sh`) one can end up with:

``` $ ls Cactus/arrangements/Fuka/KadathThorn/src/fuka/../../../../repos/KadathThorn/src/fuka/ foo $ cd Cactus/arrangements/Fuka/KadathThorn/src/fuka/../../../../repos/KadathThorn/src/fuka/ sh: 23: cd: can't cd to Cactus/arrangements/Fuka/KadathThorn/src/fuka/../../../../repos/KadathThorn/src/fuka/ $ cd -P Cactus/arrangements/Fuka/KadathThorn/src/fuka/../../../../repos/KadathThorn/src/fuka/ $ ls foo ```

Not sure how to fix this without changing GetComponents code. I am somewhat reluctant to change GetComponent’s code to add an (obscure?) option to its `cd` which then eg BSD cd on OSX does not support…

-- Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2722/getcomponents-plac...