cli argument flag processing disregarding flag values

[vladdoster]

Can't grok logic for the returns asset choices

command in question

$ eget --asset=.tar.gz --system=linux/amd64 neovim/neovim

4 candidates found for asset .tar.gz
please select manually:
  (1) nvim-linux64.tar.gz
  (2) nvim-linux64.tar.gz.sha256sum
  (3) nvim-macos.tar.gz
  (4) nvim-macos.tar.gz.sha256sum
Enter selection number:

The above command and subsequently returned choices strikes me to believe that:

1. This is a bug in the processing of CLI flags that disregards previous flag
   values and returns results that should have been filtered out.

ex. I specify criteria of .tar.gz assets for Linux, but eget returned
darwin assets that don't satisfy criteria.

Happy to fix this, but wanted to get confirmation before doing needful.

2. Somewhat quirky behavior which I am guilty of glossing over when reading
   through documentation. If this is the case, could you ELI5 the design choices
   around parsing CLI arguments and another hypothetical scenario that explains
   returned asset choices?

[vladdoster]

@zyedidia Any input on this?

[zyedidia]

Currently the asset and system flags do not filter each other, instead the asset option has priority. I will consider ways that this can be fixed.

[vladdoster]

@zyedidia

You could do something simple like...

package main

import (
	"fmt"
	"strings"
)

func main() {
        # uses --system arg
	fmt.Println(strings.Contains("Assume", "sum"))
        # use --asset arg
	fmt.Println(strings.HasSuffix("Hello World", "World"))
}

However, the more straightforward solution would leverage regex.

[vladdoster]

Thank you for the insight. Closing.