On Thu, Feb 12, 2026 at 04:03:01PM +0100, Lars Wendler wrote: > Hi, > > ncurses-6.6-20260131 and ncurses-6.6-20260207 are breaking tmux. Once I > try to start new tmux in a freshly opened terminal I get the following > error message: > > > tmux > missing or unsuitable terminal: xterm-256color > > > > Downgrading ncurses to 6.6-20260124 or older "fixes" the issue.
The changes in 20260131 were all additions to existing terminal descriptions. Nothing was removed. The report doesn't say how ncurses was built or installed. (there's nothing that demonstrates a problem with ncurses or tmux) -- Thomas E. Dickey <[email protected]> https://invisible-island.net
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