shell parsing error with an extra parenthesis and a a function reference #10294
Description
It's a minor issue, so feel free to ignore if you don't think it's worth fixing.
Describe the bug
There's an extra parenthesis in this expression, so I'd expect syntax error before: ')' error. However:
1> io:format("foo ~p", [ fun baz/0 ])).
*** ERROR: Shell process terminated! ***
=ERROR REPORT==== 17-Oct-2025::12:09:38.006429 ===
Error in process <0.89.0> with exit value:
{badarg,[{erl_anno,anno_info,
[{'fun',[{text,"fun"},{location,{1,23}}]},location,0],
[{file,"erl_anno.erl"},{line,503}]},
{erl_eval,'-reset_anno/0-fun-0-',1,
[{file,"erl_eval.erl"},{line,2066}]},
{erl_eval,'-reset_token_anno/1-lc$^0/1-0-',1,
[{file,"erl_eval.erl"},{line,2060}]},
{erl_eval,'-reset_token_anno/1-lc$^0/1-0-',1,
[{file,"erl_eval.erl"},{line,2060}]},
{erl_eval,extended_parse_exprs,1,[{file,"erl_eval.erl"},{line,2001}]},
{shell,'-get_command/6-fun-2-',2,[{file,"shell.erl"},{line,466}]}]}
=ERROR REPORT==== 17-Oct-2025::12:09:38.006460 ===
Error in process <0.72.0> with exit value:
{{case_clause,{badarg,[{erl_anno,anno_info,
[{'fun',[{text,"fun"},{location,{1,23}}]},
location,0],
[{file,"erl_anno.erl"},{line,503}]},
{erl_eval,'-reset_anno/0-fun-0-',1,
[{file,"erl_eval.erl"},{line,2066}]},
{erl_eval,'-reset_token_anno/1-lc$^0/1-0-',1,
[{file,"erl_eval.erl"},{line,2060}]},
{erl_eval,'-reset_token_anno/1-lc$^0/1-0-',1,
[{file,"erl_eval.erl"},{line,2060}]},
{erl_eval,extended_parse_exprs,1,
[{file,"erl_eval.erl"},{line,2001}]},
{shell,'-get_command/6-fun-2-',2,
[{file,"shell.erl"},{line,466}]}]}},
[{shell,server_loop,8,[{file,"shell.erl"},{line,342}]}]}
If I remove the extra ), it works as expected and if I replace fun baz/0 with something else, it also works.
However, the combination of a function reference and an extra ) triggers a badarg.
To Reproduce
Try to execute io:format("foo ~p", [ fun baz/0 ])). in the shell
Affected versions
OTP 28.1 and older versions (eg. 26.2)