Runtime Error

[fineguy]

When I try to process https://github.com/willfarrell/Browsers I get the following error:

panic: runtime error: index out of range

goroutine 1 [running]:
gopkg.in/src-d/enry%2ev1.getInterpreter(0xc42198d080, 0x81, 0x281, 0x12, 0xbec0a0)
        /tmp/enry-dfekhdox/src/gopkg.in/src-d/enry.v1/common.go:289 +0x396
gopkg.in/src-d/enry%2ev1.GetLanguagesByShebang(0xc4200ea28a, 0x12, 0xc42198d080, 0x81, 0x281, 0xbeb730, 0x0, 0x0, 0x0, 0x0, ...)
        /tmp/enry-dfekhdox/src/gopkg.in/src-d/enry.v1/common.go:270 +0x43
gopkg.in/src-d/enry%2ev1.GetLanguages(0xc4200ea28a, 0x12, 0xc42198d080, 0x81, 0x281, 0x0, 0x0, 0xc420e3cd60)
        /tmp/enry-dfekhdox/src/gopkg.in/src-d/enry.v1/common.go:126 +0x127
gopkg.in/src-d/enry%2ev1.GetLanguage(0xc4200ea28a, 0x12, 0xc42198d080, 0x81, 0x281, 0x0, 0x0)
        /tmp/enry-dfekhdox/src/gopkg.in/src-d/enry.v1/common.go:38 +0x53
main.main.func1(0xc4200ea230, 0x6c, 0xbbd740, 0xc421d17a00, 0x0, 0x0, 0x0, 0x0)
        /tmp/enry-dfekhdox/src/gopkg.in/src-d/enry.v1/cli/enry/main.go:80 +0x664
path/filepath.walk(0xc4200ea230, 0x6c, 0xbbd740, 0xc421d17a00, 0xc4209915f0, 0x0, 0x0)
        /usr/lib/go-1.8/src/path/filepath/path.go:351 +0x81
path/filepath.walk(0xc4215483c0, 0x59, 0xbbd740, 0xc421d17930, 0xc4209915f0, 0x0, 0x0)
        /usr/lib/go-1.8/src/path/filepath/path.go:376 +0x414
path/filepath.walk(0xc4215482a0, 0x53, 0xbbd740, 0xc421d17860, 0xc4209915f0, 0x0, 0x0)
        /usr/lib/go-1.8/src/path/filepath/path.go:376 +0x414
path/filepath.walk(0xc420bd5d60, 0x4a, 0xbbd740, 0xc421d17790, 0xc4209915f0, 0x0, 0x0)
        /usr/lib/go-1.8/src/path/filepath/path.go:376 +0x414
path/filepath.walk(0xc420173680, 0x33, 0xbbd740, 0xc420954a90, 0xc4209915f0, 0x0, 0x30)
        /usr/lib/go-1.8/src/path/filepath/path.go:376 +0x414
path/filepath.Walk(0xc420173680, 0x33, 0xc4209915f0, 0x0, 0xc4209915c0)
        /usr/lib/go-1.8/src/path/filepath/path.go:398 +0x14c
main.main()

Here is the full log:
stderr.txt

[zurk]

The same for me for this repo: https://github.com/mjirik/lisa
srderr.txt

[bzz]

@fineguy @zurk great report, it's always nice to have full logs attached.

Usually, adding precise instructions on how to reproduce the issue usually speeds up it's fix by maintainers.

@mcarmonaa That's what I tried, both resulted in panic + exit code 2 (which reminded of #40)

#remove old version
rm -rf $GOPATH/gopkg.in/src-d/enry.v1
rm -rf $GOPATH/bin/enry
which enry
# enry not found

go get gopkg.in/src-d/enry.v1/...

git clone --depth 1 https://github.com/mjirik/lisa.git  && cd lisa
enry
 # panic: runtime error: index out of range
echo $?
 # 2

panic: runtime error: index out of range is reproducible for both repositories for me.

[bzz]

Update:

Minimal reproducible example:

wget https://raw.githubusercontent.com/mjirik/lisa/master/tests/ubuntu_installer_test.sh
enry ubuntu_installer_test.sh

panic: runtime error: index out of range

Seems like something to do with .sh files starting with #!

---

with latest build of enry

cd ~$GOPATH/src/gopkg.in/src-d/
rm -rf enry.v1
git clone https://github.com/src-d/enry.git enry.v1
make build-cli
cp enry ~$GOPATH/bin

enry -h
  enry v1.3.2 build: 07-25-2017_09_24_59 commit: 7cd8904, based on linguist commit: 37979b2
  enry, A simple (and faster) implementation of github/linguist

Narrow it down to 4 files from lisa repository above:

find . -type f -not -path "./.git/*" | xargs -I{} enry {} 2>&1 |  grep -c "panic: runtime error: index out of range"

https://github.com/mjirik/lisa/blob/master/applications/LISA.app/Contents/MacOS/lisa
https://github.com/mjirik/lisa/blob/master/installer.sh
https://github.com/mjirik/lisa/blob/master/lisa.sh
https://github.com/mjirik/lisa/blob/master/tests/ubuntu_installer_test.sh

[bzz]

@zurk @fineguy please, feel free to try enry build from #86 and let me know if that fixes the issue for you.

[fineguy]

@bzz works like a charm for me, thx!