Unexpected token parsing statement '=' #114

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1. i4ki commented on Oct 1, 2016

   

   i4ki

   on Oct 1, 2016

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   Currently, on nash you need to quote every argument that uses '=', but I'm not sure if it's the best behaviour..
   The reason is to avoid the ambiguity below:

   ls = "a"

   The statement above must be interpreted as a variable assignment (LS EQUAL A) or as a command execution (CMD[ls] ARG[=] STRING[a]) ?

   Currently the command is a variable assignment.

   λ> ls = "a"
   λ> echo $ls
   a
   λ> touch "=" a
   λ> ls "=" a
   '='  a
2. i4ki commented on Oct 1, 2016

   

   i4ki

   on Oct 1, 2016

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   About the second problem related to nash aborting execution on first error found, as you know, this is required for nash scripts, but today nash works the same way (at least very close) when executed interactive and as script.

   If you made some mistake on your init, you can start nash with "-noinit" parameter to start it fresh. What do you think? Solves the problem?
3. katcipis commented on Oct 2, 2016

   

   katcipis

   on Oct 2, 2016

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   How does shell solve this ? I think it works on shell/bash.

   About running with -noinit, it actually wont work. An error on that nature will make you unable to log in your machine depending on the distro, fixing it is not rocket science, but it is also not fun and pleasant :-).

   I understand the beauty in letting it symmetric with how scripts are executed, but I'm a little torn with the aggressive behavior on failure when using as a interactive shell (and understanding a little better the bash behavior also :P)
4. i4ki commented on Oct 4, 2016

   

   i4ki

   on Oct 4, 2016

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   bash/posix shells are bizarre:

   [i4k@johncarter ~]$ ls = "a"
   ls: cannot access '=': No such file or directory
   ls: cannot access 'a': No such file or directory
   [i4k@johncarter ~]$ ls="a"
   [i4k@johncarter ~]$ echo $ls
   a
   [i4k@johncarter ~]$
5. i4ki

   closed this as completedon Jan 26, 2017