When executing command as /bin/<command>, fish first checks whether <command> is present in /bin/ or not. If it is found, then it will execute the command. But as we are using termux-exec, fish will actually try to execute <command> in @TERMUX_PREFIX@/bin/.
An example of this:-
/bin/ls:
1) Fish will first try find whether ls binary exists in /bin and whether user has permissions to execute it
2) If both the above are true, fish will try to execute /bin/ls.
3) But since we are using termux-exec, the path will be remapped to @TERMUX_PREFIX@/bin/ls
4) This is a *highly* inconsistent behaviour.
This can cause weird bugs when a script tries to execute with hardcoded paths, it might get errors about command not found even if it exists, because fish is checking it at the wrong place.
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