[GH-ISSUE #335] Weird bug with dynamic colors and word wrap true property #254

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opened 2026-03-04 01:03:23 +03:00 by kerem · 3 comments

kerem commented

2026-03-04 01:03:23 +03:00

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Originally created by @Bios-Marcel on GitHub (Aug 20, 2019).
Original GitHub issue: https://github.com/rivo/tview/issues/335

Hey,

When I have a TextView that has both DynamicColors and WordWrap on true and I use this code:

package main

import "github.com/rivo/tview"

func main() {
	app := tview.NewApplication()
	text := tview.
		NewTextView().
		SetDynamicColors(true).
		//Comment in to see correct behaviour
		SetWordWrap(true).
		SetText("[black][:white] ")
	app.SetRoot(text, true)
	app.Run()
}

It will not apply the colors correctly.

However, if you now add another character behind the space, an F for example, it will behave correct.

Originally created by @Bios-Marcel on GitHub (Aug 20, 2019). Original GitHub issue: https://github.com/rivo/tview/issues/335 Hey, When I have a `TextView` that has both `DynamicColors` and `WordWrap` on `true` and I use this code: ```go package main import "github.com/rivo/tview" func main() { app := tview.NewApplication() text := tview. NewTextView(). SetDynamicColors(true). //Comment in to see correct behaviour SetWordWrap(true). SetText("[black][:white] ") app.SetRoot(text, true) app.Run() } ``` It will not apply the colors correctly. However, if you now add another character behind the space, an `F` for example, it will behave correct.

kerem closed this issue

2026-03-04 01:03:23 +03:00

kerem commented

2026-03-04 01:03:24 +03:00

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@rivo commented on GitHub (Oct 17, 2019):

Yes, this is because you set word-wrap to true. This will remove trailing spaces. When we word-wrap, trailing spaces in a line should not take up extra space. The last character of a word on a line should not be a space character. So we remove them.

If you call SetWordWrap(false), your example will show the coloured space character.

@rivo commented on GitHub (Oct 17, 2019): Yes, this is because you set word-wrap to `true`. This will remove trailing spaces. When we word-wrap, trailing spaces in a line should not take up extra space. The last character of a word on a line should not be a space character. So we remove them. If you call `SetWordWrap(false)`, your example will show the coloured space character.

kerem commented

2026-03-04 01:03:24 +03:00

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@Bios-Marcel commented on GitHub (Oct 17, 2019):

Hm, I see. That's a shame, since I intended using a space with changed background color as a fake cursor in oder to implement an editor.

@Bios-Marcel commented on GitHub (Oct 17, 2019): Hm, I see. That's a shame, since I intended using a space with changed background color as a fake cursor in oder to implement an editor.

kerem commented

2026-03-04 01:03:24 +03:00

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Owner

@rivo commented on GitHub (Dec 29, 2019):

I understand. Maybe you can use some kind of almost-empty character instead.

@rivo commented on GitHub (Dec 29, 2019): I understand. Maybe you can use some kind of almost-empty character instead.

kerem referenced this issue

2026-03-04 01:08:25 +03:00

[PR #254] [CLOSED] Support Go Modules #889