Celestial Software Forum - Recent Posts https://www.celestialsoftware.net/community/ Celestial Software Discussion Board en-US Thu, 30 Apr 2026 09:39:05 +0000 wpForo 60 RE: Using AT with Claude Code AI gives wild screen I/O updates resullting in as many as six duplicate chunks in the scrollback buffer https://www.celestialsoftware.net/community/absolutetelnetgeneral/using-at-with-claude-code-ai-gives-wild-screen-i-o-updates-resullting-in-as-many-as-six-duplicate-chunks-in-the-scrollback-buffer/#post-9325 Sun, 26 Apr 2026 19:42:56 +0000 so far, so good using RC25. can you let me know how is "Goto Link (click)" different from the disabled "Go To URL (ALT+HOME)"?

]]> Todd Andrews https://www.celestialsoftware.net/community/absolutetelnetgeneral/using-at-with-claude-code-ai-gives-wild-screen-i-o-updates-resullting-in-as-many-as-six-duplicate-chunks-in-the-scrollback-buffer/#post-9325 RE: Using AT with Claude Code AI gives wild screen I/O updates resullting in as many as six duplicate chunks in the scrollback buffer https://www.celestialsoftware.net/community/absolutetelnetgeneral/using-at-with-claude-code-ai-gives-wild-screen-i-o-updates-resullting-in-as-many-as-six-duplicate-chunks-in-the-scrollback-buffer/#post-9324 Sun, 12 Apr 2026 00:33:04 +0000 RC24 appears to have resolved the issues with claude screen updates -- thank you! i did test putty and it seemed to handle claude screen IO just fine.

 

the multi-line URL detection is working great, as is the ctrl+right-click but i do have a question about the context menu -- how is "Goto Link (click)" different from the disabled "Go To URL (ALT+HOME)"?

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]]> Todd Andrews https://www.celestialsoftware.net/community/absolutetelnetgeneral/using-at-with-claude-code-ai-gives-wild-screen-i-o-updates-resullting-in-as-many-as-six-duplicate-chunks-in-the-scrollback-buffer/#post-9324 RE: Using AT with Claude Code AI gives wild screen I/O updates resullting in as many as six duplicate chunks in the scrollback buffer https://www.celestialsoftware.net/community/absolutetelnetgeneral/using-at-with-claude-code-ai-gives-wild-screen-i-o-updates-resullting-in-as-many-as-six-duplicate-chunks-in-the-scrollback-buffer/#post-9323 Mon, 06 Apr 2026 19:16:57 +0000 thank you! RC24 installed. i'll test out the changes and report back in a day or three

]]> Todd Andrews https://www.celestialsoftware.net/community/absolutetelnetgeneral/using-at-with-claude-code-ai-gives-wild-screen-i-o-updates-resullting-in-as-many-as-six-duplicate-chunks-in-the-scrollback-buffer/#post-9323 RE: Using AT with Claude Code AI gives wild screen I/O updates resullting in as many as six duplicate chunks in the scrollback buffer https://www.celestialsoftware.net/community/absolutetelnetgeneral/using-at-with-claude-code-ai-gives-wild-screen-i-o-updates-resullting-in-as-many-as-six-duplicate-chunks-in-the-scrollback-buffer/#post-9322 Mon, 06 Apr 2026 18:49:30 +0000 NEW UPDATE!!

Based on some back and forth with Todd, I've made the following updates for 13.16 RC24:

1. Implemented "Synchronized Output" (DEC private mode 2026) to take cues from the host on when to update (or not update) the screen as data is streaming.  In combination with scrollback clearing, Claude uses this to reduce the screen clutter as screens are redrawn.

2. Enhanced multi-line URL identification to allow for 'margins'...  spaces at the left and right of the screen that would otherwise 'break' the URL recognition.

3. ctrl-right-button-click now brings up the context menu even when 'normal' right-button-click is mapped to 'paste'.  This isn't major, but is consistent with how some other terminals behave

4. Implemented "focus reporting" (DEC private mode 1004) that allows the terminal to tell the host when it has focus.  Claude uses this for example to DRAW or HIDE the cursor

5. Implement color palette reporting (DEC private mode 2031) that allows the terminal to tell the hose when it is using 'dark' mode or 'light' mode.  Claude requests this, but I can't tell exactly what it does DIFFERENTLY with it enabled.

6. Better implementation of glyphs used by Claude for animated cursors.  Previously, when a font didn't have these, they'd all fall back to an asterisk (*) and the animation effect was lost

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https://www.celestialsoftware.net/beta-testing/

 

 

Brian

 

 

]]> bpence https://www.celestialsoftware.net/community/absolutetelnetgeneral/using-at-with-claude-code-ai-gives-wild-screen-i-o-updates-resullting-in-as-many-as-six-duplicate-chunks-in-the-scrollback-buffer/#post-9322 RE: Using AT with Claude Code AI gives wild screen I/O updates resullting in as many as six duplicate chunks in the scrollback buffer https://www.celestialsoftware.net/community/absolutetelnetgeneral/using-at-with-claude-code-ai-gives-wild-screen-i-o-updates-resullting-in-as-many-as-six-duplicate-chunks-in-the-scrollback-buffer/#post-9321 Mon, 30 Mar 2026 02:00:23 +0000 not quite right yet but getting there. :D sent private email with details.

]]> Todd Andrews https://www.celestialsoftware.net/community/absolutetelnetgeneral/using-at-with-claude-code-ai-gives-wild-screen-i-o-updates-resullting-in-as-many-as-six-duplicate-chunks-in-the-scrollback-buffer/#post-9321 RE: Using AT with Claude Code AI gives wild screen I/O updates resullting in as many as six duplicate chunks in the scrollback buffer https://www.celestialsoftware.net/community/absolutetelnetgeneral/using-at-with-claude-code-ai-gives-wild-screen-i-o-updates-resullting-in-as-many-as-six-duplicate-chunks-in-the-scrollback-buffer/#post-9320 Sat, 28 Mar 2026 00:09:18 +0000 RC23 installed. i'll test and report back, probably sometime this weekend

]]> Todd Andrews https://www.celestialsoftware.net/community/absolutetelnetgeneral/using-at-with-claude-code-ai-gives-wild-screen-i-o-updates-resullting-in-as-many-as-six-duplicate-chunks-in-the-scrollback-buffer/#post-9320 RE: Using AT with Claude Code AI gives wild screen I/O updates resullting in as many as six duplicate chunks in the scrollback buffer https://www.celestialsoftware.net/community/absolutetelnetgeneral/using-at-with-claude-code-ai-gives-wild-screen-i-o-updates-resullting-in-as-many-as-six-duplicate-chunks-in-the-scrollback-buffer/#post-9319 Fri, 27 Mar 2026 23:42:59 +0000 The updates are in!  I had to tweak the implementation of scrollback clearing a bit.  I also added enhanced detection of multi-line URLs to help when you have to click Claude links (below) that are very large.

Latest:

https://www.celestialsoftware.net/beta-testing/

 

17]]> bpence https://www.celestialsoftware.net/community/absolutetelnetgeneral/using-at-with-claude-code-ai-gives-wild-screen-i-o-updates-resullting-in-as-many-as-six-duplicate-chunks-in-the-scrollback-buffer/#post-9319 RE: Using AT with Claude Code AI gives wild screen I/O updates resullting in as many as six duplicate chunks in the scrollback buffer https://www.celestialsoftware.net/community/absolutetelnetgeneral/using-at-with-claude-code-ai-gives-wild-screen-i-o-updates-resullting-in-as-many-as-six-duplicate-chunks-in-the-scrollback-buffer/#post-9318 Fri, 27 Mar 2026 12:54:08 +0000 You're right.  RC22 didn't quite completely fix the scrollback clearing feature.  I know what it is and should have a fix soon.

 

 

 

]]> bpence https://www.celestialsoftware.net/community/absolutetelnetgeneral/using-at-with-claude-code-ai-gives-wild-screen-i-o-updates-resullting-in-as-many-as-six-duplicate-chunks-in-the-scrollback-buffer/#post-9318 RE: Using AT with Claude Code AI gives wild screen I/O updates resullting in as many as six duplicate chunks in the scrollback buffer https://www.celestialsoftware.net/community/absolutetelnetgeneral/using-at-with-claude-code-ai-gives-wild-screen-i-o-updates-resullting-in-as-many-as-six-duplicate-chunks-in-the-scrollback-buffer/#post-9317 Thu, 26 Mar 2026 03:01:32 +0000 RC22 has substantial improvements. i'll be sending a debug log and plain copy-and-past capture via private email. here is claude's new analysis. i can't seem to get the forum editor to preserve formatting for the columnar data -- code, source code and paste as plain text editor function icons don't preserve formatting. is there a way to force one of these functions to use a monospaced font? for now i'll attach as a plain text file.

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]]> Todd Andrews https://www.celestialsoftware.net/community/absolutetelnetgeneral/using-at-with-claude-code-ai-gives-wild-screen-i-o-updates-resullting-in-as-many-as-six-duplicate-chunks-in-the-scrollback-buffer/#post-9317 RE: Using AT with Claude Code AI gives wild screen I/O updates resullting in as many as six duplicate chunks in the scrollback buffer https://www.celestialsoftware.net/community/absolutetelnetgeneral/using-at-with-claude-code-ai-gives-wild-screen-i-o-updates-resullting-in-as-many-as-six-duplicate-chunks-in-the-scrollback-buffer/#post-9316 Tue, 24 Mar 2026 16:10:13 +0000 RC22has been installed and will do some testing today. btw, thank you for including the beta url when you announce new versions :D

]]> Todd Andrews https://www.celestialsoftware.net/community/absolutetelnetgeneral/using-at-with-claude-code-ai-gives-wild-screen-i-o-updates-resullting-in-as-many-as-six-duplicate-chunks-in-the-scrollback-buffer/#post-9316