Robert Allan JamesandClaude Sonnet 5
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Captain Bob asked for the framebuffer cursor to render as a blinking vertical bar rather than the previous static solid-block glyph. vt100_draw_cursor() (hal/vt100.c) now fills a thin bar (cell_w()/8, min 1px, full cell height) at the cursor's left edge instead of the whole cell -- an I-beam shape. vt100_erase_cursor() is unchanged (clearing the whole cell already safely covers the narrower bar). Blinking is new in repl.c: sk_console_readline()'s idle branch toggles the cursor on/off every SK_CURSOR_BLINK_INTERVAL (50 ticks, 500ms at 100Hz) via alternating console_fb_draw_cursor()/console_fb_erase_cursor() calls, independent of the heartbeat/idle-beat mechanism the §I.9 fix just touched (deliberately not reused, to avoid recoupling to that path). Runs regardless of n, so it blinks whether sitting at a bare prompt or paused mid-edit. Every deterministic draw site (initial prompt, prompt reanchor, backspace, character echo) now goes through a new helper, sk_cursor_show(), which resets the blink cycle to "on" and redraws -- typing always shows a solid cursor, never mid-blink. Verified via the mandatory foreground 3-arch QEMU acceptance boot: amd64 (logs/20260905-021054, extensive live interactive typing including multi-line : / ; word definitions and error cases, prompts stayed correctly attached throughout), aarch64 (logs/20260905-021551), riscv64 (logs/20260905-022324) -- all three reached (zuse) ok> and shut down cleanly via BYE. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_019YcT3H2PQeyujrzjqS3Var
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