bash parses array literal after eval but OSH doesn't about oil

[itszor]

FWIW, this is the shellcheck output:

In arrlit.sh line 2:
component=foo
^-- SC2034: component appears unused. Verify it or export it.


In arrlit.sh line 3:
foo_tasks=(a b c)
^-- SC2034: foo_tasks appears unused. Verify it or export it.


In arrlit.sh line 4:
eval tasks=(\${${component}_tasks[@]})
           ^-- SC1036: '(' is invalid here. Did you forget to escape it?
           ^-- SC1088: Parsing stopped here. Invalid use of parentheses?
           ^-- SC1098: Quote/escape special characters when using eval, e.g. eval "a=(b)".

It works in osh with the eval quoted as suggested in the last line.

[andychu]

Thanks for trying this! Yes if you are willing to change it for OSH, I would suggest using the quotes as ShellCheck suggests.

Parsing array literal words is sort of a special case that I've limited to local / declare / etc. With eval, it makes sense to always use quotes, since eval is supposed to take a string.

If adding quotes gets you past this, please let me know what other errors you run into! thanks.

[itszor]

After tweaking several instances of the problem, I get:

Traceback (most recent call last):
  File "/home/andy/git/oilshell/oil/Python-2.7.13/Lib/runpy.py", line 174, in _r
un_module_as_main
  File "/home/andy/git/oilshell/oil/Python-2.7.13/Lib/runpy.py", line 72, in _ru
n_code
  File "/home/andy/git/oilshell/oil/bin/oil.py", line 509, in <module>
  File "/home/andy/git/oilshell/oil/bin/oil.py", line 492, in main
  File "/home/andy/git/oilshell/oil/bin/oil.py", line 475, in OilMain
  File "/home/andy/git/oilshell/oil/bin/oil.py", line 413, in OshMain
  File "/home/andy/git/oilshell/oil/bin/../core/cmd_exec.py", line 985, in Execu
te
  File "/home/andy/git/oilshell/oil/bin/../core/cmd_exec.py", line 949, in _Exec
ute
  File "/home/andy/git/oilshell/oil/bin/../core/cmd_exec.py", line 758, in _Disp
atch
  File "/home/andy/git/oilshell/oil/bin/../core/cmd_exec.py", line 978, in _Exec
uteList
  File "/home/andy/git/oilshell/oil/bin/../core/cmd_exec.py", line 949, in _Exec
ute
  File "/home/andy/git/oilshell/oil/bin/../core/cmd_exec.py", line 845, in _Disp
atch
NotImplementedError: 14
FATAL: couldn't import from app bundle '/home/jbrown/bin/oil.ovm' (1)
Stripping the oil.ovm binary may cause this error.
See https://github.com/oilshell/oil/issues/47

I'm not sure exactly what construct is causing that...

[itszor]

Also,

osh warning: *** trap not implemented ***

[andychu]

OK thanks for the report, the error message is bad because it just says construct "14". Issue #38 is related. It looks like I have to provide a better error or just implement that. Let me see if I can reproduce.

[itszor]

I guess you've figured this out, but this is issue #66.

Thanks!

[andychu]

Thanks, I'm closing this since you addressed it and issue #66 is fixed (still pending release).