"panic: regexp: Compile" while using invalid regex

[evakhoni]

jf version 1.1.0 / fedora 35

• description: passing an invalid regex to jf causing it to crash and dump stack

• reproducible: 100%

• steps: jsonfind -r "?" any-json-file.json

• expected result: simple error like: 'regex search term is invalid'

• actual result:

panic: regexp: Compile(?): error parsing regexp: missing argument to repetition operator: ?

goroutine 1 [running]:
regexp.MustCompile({0x7ffdd06cf1bb, 0x1})
/usr/local/Cellar/go/1.18.1/libexec/src/regexp/regexp.go:317 +0xbb
jsonfind/pkg/scout.(*Scout).isAMatch(0x5a0ca9?, {0xc0001360f0, 0x4c})
/Users/anthonyfox/dev/jsonfind/pkg/scout/scout.go:77 +0x5c
jsonfind/pkg/scout.(*Scout).parseMap(0xc0000f7d30, 0x2?, {0xc0000b6480, 0x37})
/Users/anthonyfox/dev/jsonfind/pkg/scout/scout.go:49 +0x1fd
jsonfind/pkg/scout.(*Scout).parseMap(0xc0000f7d30, 0x2?, {0xc0000bc770, 0x6})
/Users/anthonyfox/dev/jsonfind/pkg/scout/scout.go:45 +0x15d
jsonfind/pkg/scout.(*Scout).parseMap(0xc0000f7d30, 0x2?, {0x0, 0x0})
/Users/anthonyfox/dev/jsonfind/pkg/scout/scout.go:45 +0x15d
jsonfind/pkg/scout.(*Scout).DoSearch(0xc0000f7d30)
/Users/anthonyfox/dev/jsonfind/pkg/scout/scout.go:33 +0x4e
main.entrypoint(0xc0000ba5c0)
/Users/anthonyfox/dev/jsonfind/cmd/jf/main.go:68 +0x25c
github.com/urfave/cli/v2.(*App).RunContext(0xc000112000, {0x5e2328?, 0xc0000bc020}, {0xc0000ba040, 0x4, 0x4})
/Users/anthonyfox/dev/go/pkg/mod/github.com/urfave/cli/v2@v2.2.0/app.go:315 +0x9cc
github.com/urfave/cli/v2.(*App).Run(...)
/Users/anthonyfox/dev/go/pkg/mod/github.com/urfave/cli/v2@v2.2.0/app.go:215
main.main()
/Users/anthonyfox/dev/jsonfind/cmd/jf/main.go:48 +0x305

[WTFox]

Completely agree. This should be gracefully handled. Thanks for the issue!

[WTFox]

New version published. Thanks again for using jsonfind and finding things I missed. ❤️