Grep: Later pattern matches filename

[xuchunyang]

In Grep action, the pattern package use matches ;;; Package Manager, even there is no use in it. It is because the second pattern use is matching the filename /Users/xcy/foo.txt:

~ $ grep -niH -e package /Users/xcy/foo.txt  | grep --color=always -i  use
/Users/xcy/foo.txt:1:;;; Package Manager
~ $

[thierryvolpiatto]

Please be more explicit (recipe ?), I don't understand what you mean, I tried with ack-grep and rg as backend on the /lisp directory of Emacs and had no problems with "package use" as pattern.

[xuchunyang]

When I search with the pattern package use, the results contains ;;; Package Manager.

[xuchunyang]

If you're on Linux, you should be able to reproduce:

1. echo hello > ~/test.txt
2. use helm grep to search with the pattern hello home

The result shouldn't empty, which is unexpected/unwanted to me.

[thierryvolpiatto]

When using same command line as Helm in a shell, I have one result (same as Helm) with ack and indeed no result with grep whereas with Helm I have ine result as well.
Here the command lines used by Helm:
Ack:

** 15:08:06.683898 (helm-grep-init)
 Command line used was:

>>> ack-grep -Hn --color --smart-case --no-group  hello /home/thierry/tmp/test.txt  | ack-grep --smart-case --color  home

Grep:

** 15:11:17.459792 (helm-grep-init)
 Command line used was:

>>> grep --color=always -d skip --exclude=.\#\* --exclude=\*.o --exclude=\*\~ --exclude=\*.bin --exclude=\*.lbin --exclude=\*.so --exclude=\*.a --exclude=\*.ln --exclude=\*.blg --exclude=\*.bbl --exclude=\*.elc --exclude=\*.lof --exclude=\*.glo --exclude=\*.idx --exclude=\*.lot --exclude=\*.fmt --exclude=\*.tfm --exclude=\*.class --exclude=\*.fas --exclude=\*.lib --exclude=\*.mem --exclude=\*.x86f --exclude=\*.sparcf --exclude=\*.dfsl --exclude=\*.pfsl --exclude=\*.d64fsl --exclude=\*.p64fsl --exclude=\*.lx64fsl --exclude=\*.lx32fsl --exclude=\*.dx64fsl --exclude=\*.dx32fsl --exclude=\*.fx64fsl --exclude=\*.fx32fsl --exclude=\*.sx64fsl --exclude=\*.sx32fsl --exclude=\*.wx64fsl --exclude=\*.wx32fsl --exclude=\*.fasl --exclude=\*.ufsl --exclude=\*.fsl --exclude=\*.dxl --exclude=\*.lo --exclude=\*.la --exclude=\*.gmo --exclude=\*.mo --exclude=\*.toc --exclude=\*.aux --exclude=\*.cp --exclude=\*.fn --exclude=\*.ky --exclude=\*.pg --exclude=\*.tp --exclude=\*.vr --exclude=\*.cps --exclude=\*.fns --exclude=\*.kys --exclude=\*.pgs --exclude=\*.tps --exclude=\*.vrs --exclude=\*.pyc --exclude=\*.pyo -niH -e hello /home/thierry/tmp/test.txt  | grep --color=always -i  home

[thierryvolpiatto]

So I don't know yet why Helm display one result with Grep backend, will look into this if I find some time.
Thanks.

[thierryvolpiatto]

This is hard to fix since the subsequent grep calls use the output of the first grep which must use filename and linum.
So for now I have no idea how to fix this.