On Tue, 14 Jun 2022 08:01:45 +0000
5990 via Cygwin wrote:
> ## Bug:
> Piping the standard output of cat into the standard input of golang or
> python, makes the Windows Terminal render ANSI codes as arrows.
>
> For example:
> `\033[36m` turns into `←[36m` (or in base64'd UNICODE: `4oaQWzM2bQ==`)
>
> ## Environment:
> - cat v8.26
> - Windows Terminal v1.12.10982.0
> - golang version go1.17.2 windows/amd64
> - python v3.7.7
>
> colors.go
> ```
> package main
>
> import "fmt"
>
> const colorReset = "\033[0m"
> const colorCyan = "\033[36m"
>
> func main(){
> fmt.Print(string(colorCyan) + "golang-test" + string(colorReset) + "\n")
> }
> ```
>
>
> color.py
> ```
> from lolpython import lol_py
>
> lol_py("python-test")
> ```
>
>
> domains.txt is an empty file (from my testing, the contents of domains.txt do
> not affect this bug)
>
> ## What works:
> The following commands will successfuly output in cyan color
> `go run color.go`
> `go build color.go && color.exe`
> `go build color.go && cat domains.txt | color.exe`
> `go build color.go && echo a | color.exe`
> `go build color.go && type domains.txt | color.exe`
> `py -3.7 color.py`
>
> ## What triggers the bug:
> `cat domains.txt | go run color.go`
> OUTPUT: `←[36mgolang-test←[0m`
>
> `cat domains.txt | py -3.7 color.py`
> OUTPUT:
> `←[38;2;128;237;18mp←[0m←[38;2;139;231;12my←[0m←[38;2;150;225;8mt←[0m←[38;2;161;217;5mh←[0m←[38;2;172;209;2mo←[0m←[38;2;182;200;1mn←[0m←[38;2;192;190;1m-←[0m←[38;2;201;180;1mt←[0m←[38;2;210;170;3me←[0m←[38;2;218;159;5ms←[0m←[38;2;226;148;9mt←[0m`
>
> Strangely enough, golang compiled executables work perfectly, but piping `cat
> domains.txt | go run color.go` does not work.
> The workaround I had to go with is to use Windows's built-in `type` command
> instead of `cat`. This was a tricky bug to track-down so I hope this report
> helps hahah
I cannot reproduce your problem.
My environment is:
cygwin 3.3.5
cat 8.32
Windows Terminal 1.13.11431.0
go version go1.18.3 windows/amd64
What shell did you use? cygwin bash? cmd.exe? powershell?
--
Takashi Yano <[email protected]>
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