There is an updated pull request by cultab against master on the void-packages repository

https://github.com/cultab/void-packages megasdk
https://github.com/void-linux/void-packages/pull/39733

MEGAcmd: update to 1.5.1
I am trying to update `MEGAcmd` to `1.5.1` and `MEGAsdk` to `3.9.11d` (as per the version submoduled in MEGAcmd's repo). 
But am I getting a very peculiar issue with the ./configure script.

```
configure: line 22309: syntax error near unexpected token `cat'
configure: line 22309: `cat >confcache <<\_ACEOF'
```

It doesn't really seem like there is a syntax error there.
It runs just fine when manually run outside of the chroot. So I tried the following:

 - using `chroot-bash` outside the chroot to run `./configure` and replicated the issue. 
 - using `bash` outside the chroot to run `./configure` and replicated the issue. 
 - using `zsh` inside the chroot (by redefining `do_configure` to use `zsh`) which bypasses the issue but creates another issue.
 - using `sh`  outside the chroot works as expected.

_I don't think using another shell is a real solution._


I don't really know how to continue so I'm making a **broken draft pull request** to ask for help.
What could bash be doing differently so as to cause this issue?
Maybe I messed something up when porting `autotools.patch` to the new version of `MEGAcmd`?


A patch file from https://github.com/void-linux/void-packages/pull/39733.patch is attached