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Got flash banged by OpenCode recently? Yeah, that was me. Here's what happened: OpenCode/OpenTUI detects terminal theme mode (light or dark) by querying OSC 10/11 for the terminal’s foreground/background colors and deriving the mode from those values. OpenTUI also enables DEC Private Mode 2031 to receive theme-change notifications. When... that mode is enabled, terminals can send CSI 997 when the system theme changes. OpenTUI treated the 997 payload as authoritative and let it override the OSC 10/11-derived result. That turned out to be wrong. In some terminals, the 997 payload is simply unreliable: it can report light while the queried terminal colors clearly indicate a dark theme. That’s what caused the flash bangs. The fix seemed straightforward: stop trusting the 997 payload as the actual theme mode and use it only as a trigger to re-query OSC 10/11, then derive the mode from the returned foreground/background colors. That works great. Except OpenTUI had also started using OSC 11 to set the terminal’s default background color, so the terminal gutter around the drawn TUI matched the app background instead of the terminal’s own default background. This was introduced recently in OpenTUI. That created a new problem: if you use OSC 11 to override the terminal background, then later query OSC 11, you are just reading back your own override instead of the terminal’s real theme background. No problem. Reset the terminal background with OSC 111, query OSC 10/11, derive the mode, then restore the renderer background again. Oh wait. Turns out Ghostty has a bug. Once this background reset/override path is used, later OSC 11 background reporting can get stuck and stop tracking system theme changes correctly. Even though theme-change notifications still fire and OSC 10 foreground updates continue. This would cause further issues where the OSC 10/11 derivation would be wrong again. So for now: no using OSC 11 to set the terminal background color just to fill the gutter. TL;DR: OpenTUI must treat CSI 997 only as a hint that the terminal theme may have changed and rely exclusively on OSC 10/11 color queries for actual theme mode detection, while avoiding terminal background mutation via OSC 11/111 because that breaks correctness in some terminals like Ghostty.show more

kmdr

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Ghostty now has light/dark-mode specific themes and reacts live to your system theme changing. The titlebar also now matches the background color of the focused terminal, including runtime palette changes (i.e. OSC 11). See the video for examples (sound explains). The titlebar one is another example of one of those "details matter" features. We only modify the titlebar color if the focused terminal borders the top of the window. If its a a split that is nested below the top border, we match the previously focused terminal that touched the top border.

Ghostty now has light/dark-mode specific themes and reacts live to your system theme changing. The titlebar also now matches the background color of the focused terminal, including runtime palette changes (i.e. OSC 11). See the video for examples (sound explains). The titlebar one is another example of one of those "details matter" features. We only modify the titlebar color if the focused terminal borders the top of the window. If its a a split that is nested below the top border, we match the previously focused terminal that touched the top border.

Mitchell Hashimoto

76,329 просмотров • 1 год назад

I don't know why you would, but you could switch to light theme mode via system. In the next version of opencode and on terminals that support DEC private mode 2031 for color scheme updates.

I don't know why you would, but you could switch to light theme mode via system. In the next version of opencode and on terminals that support DEC private mode 2031 for color scheme updates.

kmdr

68,977 просмотров • 2 месяцев назад

The season is changing and maybe your background as well. It might be a good time to change your Xbox theme. Get started:

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Dark mode prevents myopia (nearsightedness). Dr. Alexander Wunsch, German physician studying the effects of light on health for 30+ years: "Whenever the opportunity arises to read text white on black, we should do so." Here's the mechanism: Your retina has two cell systems — ON cells and OFF cells. Black letters on white background activate the OFF cell system. Chronic activation of the OFF cell system promotes the development of myopia. Dark mode — white text on black background — activates the ON cell system instead. This is the preventive mechanism. There is also a significant difference in total light load: > Standard display (white background, black text): 95% of screen light is emitted to display the page. Only 5% is the actual text. > Dark mode (black background, white text): only 5% of total light is needed to convey the same information. Less light from the screen. The correct cell system is activated. Lower myopia risk. The first computer screens were dark mode by default — black background, green or amber text. That was optimal. The shift to white backgrounds was aesthetic, not biological. University of Tübingen, 2018 — researchers developed a mathematical model analyzing image content for myopia risk potential. Their finding? Natural outdoor scenes have a neutral effect on the eye. Conventional text on white background promotes myopia development. Dark mode presentation does not. They then tested this in subjects. Black letters on white background produced measurable changes in the eye that promote myopia. In Europe, half of all students are already nearsighted. Myopia is the most common visual impairment among young people. The more a child reads — the higher the risk. The mechanisms are not yet fully understood in all details. But the consequences are clear. Wunsch: "Dark mode is recommended wherever it does not impair the workflow during screen work." "In the evening and at night, this should be the mandatory setting in order to keep the disruption of the internal clock and the possible damage to the retina as low as possible." Wunsch's advice to parents: "If children discover the joy of reading and develop into bookworms, it is certainly a good investment to provide them with an e-book reader that enables text display on a dark background." The original screen setting was black background. We changed it for aesthetics. The biology didn't change with it.

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no.mind

55,980 просмотров • 1 месяц назад

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jhey ʕ•ᴥ•ʔ

413,595 просмотров • 2 лет назад

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What if we could animate theme transitions just like the OS does for dark and light mode? Well, now you can with Uniwind Pro 🥳 Enable smooth transitions directly from JS, from ANY theme to ANY theme (even OS triggered theme changes). The animation runs in Swift/Kotlin, while C++ handles the ShadowTree update

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effy

26,004 просмотров • 1 год назад

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Ghostty will now auto-generate a full, cohesive 256-color theme from just the base 16-color palette. This makes it significantly easier to make custom themes that are beautiful (just define 16 colors). See the demo below showing multiple themes fully generated. Thanks to Jake Stewart who contributed this to Ghostty and made a nice write-up explaining the background and approach:

Mitchell Hashimoto

174,227 просмотров • 3 месяцев назад

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Aaron Boodman

18,808 просмотров • 1 год назад

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57,614 просмотров • 1 месяц назад

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kmdr

32,640 просмотров • 24 дней назад

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Mew

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OUT IN THE OPEN INTRO #osc #bfdi #osctwt

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