| env GO111MODULE=off | |
| # issue 29899: handling files with non-Go extension | |
| go list -e -test -json -- c.c x.go | |
| stdout '"Err": "named files must be .go files: c.c"' | |
| ! go list -test -json -- c.c x.go | |
| stderr '^named files must be \.go files: c\.c$' | |
| -- x.go -- | |
| package main | |
| -- c.c -- | |
| package c |