[BUG]Err Fprintln

[gczgcz2015]

Describe the bug
when i run hello example somting wrong

To Reproduce
run hello example

Expected behavior
correct print

Screenshots

Environment (please complete the following information):
Linux version 5.10.7-3-MANJARO (builduser@LEGION) (gcc (GCC) 10.2.0, GNU ld (GNU Binutils) 2.35.1) #1 SMP PREEMPT Fri Jan 15 21:11:34 UTC 2021

[mjarkk]

From your screenshot it looks like you're using GoLand's integrated terminal and from prior experience they seem to have a bit of a buggy terminal.
Does this also happen in the dedicated terminal application?

[gczgcz2015]

From your screenshot it looks like you're using GoLand's integrated terminal and from prior experience they seem to have a bit of a buggy terminal.
Does this also happen in the dedicated terminal application?

i tried 2 different terminal（konsole,alacritty）, still has problem

[dankox]

Hi, do you use monospace font on your terminals? The text seems to take less space than the frame characters.

Another question is, what version of gocui are you using. From the IDE screenshot, it seems like you have old version v0.4.0 or v0.3.1. Can you check if you build with the latest one?

[gczgcz2015]

Hi, do you use monospace font on your terminals? The text seems to take less space than the frame characters.

Another question is, what version of gocui are you using. From the IDE screenshot, it seems like you have old version v0.4.0 or v0.3.1. Can you check if you build with the latest one?

version is 1.0.1

[mjarkk]

Which terminal font are you using?

[gczgcz2015]

Which terminal font are you using?

font is Source Code Pro
when i use jroimartin/gocui, it's OK

[mjarkk]

Can you try to run the tcell demos and check if they work?

https://github.com/gdamore/tcell/tree/master/_demos

[dankox]

Can you also try the hello.go example and set the frame to be ascii? You can do that by updating main() function like this:

func main() {
	g, err := gocui.NewGui(gocui.OutputNormal, true)
	if err != nil {
		log.Panicln(err)
	}
	defer g.Close()
	g.ASCII = true  // <- this line was added

	g.SetManagerFunc(layout)

Also I would like you to try this command in the terminal (alacritty or whatever you are using and seeing the problems):

printf "┌─────────────┐\n│Hello world! │\n└─────────────┘\n"

Let us know how the output looks like. This is the same as hello.go is producing, so we might be sure if the problem is in the underlying library, or in the terminal setup.

[gczgcz2015]

Can you also try the hello.go example and set the frame to be ascii? You can do that by updating main() function like this:

func main() {
	g, err := gocui.NewGui(gocui.OutputNormal, true)
	if err != nil {
		log.Panicln(err)
	}
	defer g.Close()
	g.ASCII = true  // <- this line was added

	g.SetManagerFunc(layout)

Also I would like you to try this command in the terminal (alacritty or whatever you are using and seeing the problems):

printf "┌─────────────┐\n│Hello world! │\n└─────────────┘\n"

Let us know how the output looks like. This is the same as hello.go is producing, so we might be sure if the problem is in the underlying library, or in the terminal setup.

when add ascII = true it's OK

[dankox]

Ok and what about the printf command? Did it work?
From the ASCII=true sample, it seems that the problem might be the monospace font which you are using. So to confirm this, if you could try that printf to see if it displays correctly or not. Thanks