julia

b0ce1ca4 - REPL: Handle missing clipboard tools gracefully with OSC52 fallback

REPL: Handle missing clipboard tools gracefully with OSC52 fallback When clipboard utilities (xsel, xclip, or wl-clipboard) are unavailable on Linux/FreeBSD systems, the REPL history search now falls back to OSC52 escape sequences instead of displaying an error. Changes: - Added clipboard(io::IO, x) method supporting OSC52 escape sequences - Implemented XTGETTCAP-based detection for OSC52 terminal support - OSC52 is now preferred over traditional clipboard tools when available - Supports modern terminal emulators (iTerm2, Windows Terminal, Alacritty, kitty, wezterm, foot, and others) - Detection uses DCS + q sequence to query the 'Ms' capability - Results are cached in JULIA_OSC52_SUPPORTED environment variable - Falls back to traditional tools if OSC52 is not supported - Only shows error if both OSC52 and traditional tools fail OSC52 is preferred because it works seamlessly over SSH and in remote environments where traditional clipboard tools may not be available. Note: tmux users may need to configure `set-clipboard on` for OSC52 to work properly. See tmux/tmux#4275 for details on tmux clipboard limitations. Fixes #60145