Variable with name "end"

[LukasWallisch]

Hey guy's i'm not sure if this was already reported and i overlooked it.
If a predefined variable is given the name "end", jq throws an error: "syntax error, unexpected end..."
for example:
$ jq -n --arg last "1" '{end: $last}'
works as expected giving:
{ "end": "1" }

but
$ jq -n --arg end "1" '{end: $end}'
gives:
jq: error: syntax error, unexpected end, expecting IDENT or __loc__ (Unix shell quoting issues?) at <top-level>, line 1: {end: $end} jq: 1 compile error

I don't know how complex it would be to fix this, but at least it should be mentioned in the manual I think.

[nicowilliams]

I'm trying to find a way to permit $<keyword>, but it causes tons of reduce-reduce conflicts from Bison...

[pkoppstein]

@LukasWallisch - The manual probably omits the restriction because it was not intended to be definitive. In the meantime, the jq FAQ mentions the issue in the Caveats section.

[nicowilliams]

I think we'll have to change the lexer to produce a separate token type for $name and the grammar accordingly.

[Alanscut]

hi @LukasWallisch
Now jq can handle the scenario you described ，you can try it again.
jq version : master branch

root@os-001: jq -n --arg end "1" '{end: $end}'
{
  "end": "1"
}

[itchyny]

Same issue of #1868 and fixed by c72ed13, so closing the issue.