Claude
61a7338f88
- kte refuses to start when stdin is not a terminal: piped bytes were executed as editor commands (C-k s plus a path writes a file), and after EOF the loop spun at full CPU with no way to quit. - The terminal frontend handles all pending input before drawing (a paste used to cost a frame and a full redraw per character) and redraws only after input, a resize or deferred opens, else once a second. The renderer caches, per row and buffer version, where the horizontally scrolled part of a line starts and the cursor's render column, instead of rescanning the line every frame. Idle CPU with the cursor at the end of a 20 MB line: one full core -> ~1%. - Buffers with a virtual name (+HELP+) are not journaled and saving one asks for a file name; it used to write ./+HELP+ and journal under that path. - Yank with a repeat count is capped at 256 MiB in total instead of reserving count x size bytes (C-u 1000000 C-y of a large kill). - Remove an overload clang reports as unused (-Werror on macOS). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_015rcVQiiWyTzoNrsvLSaAfB
45 lines
1.1 KiB
C++
45 lines
1.1 KiB
C++
/*
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* TerminalRenderer - ncurses-based renderer for terminal mode
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*/
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#pragma once
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#include <vector>
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#include <cstdint>
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#include <cstddef>
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#include "Renderer.h"
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class TerminalRenderer final : public Renderer {
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public:
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TerminalRenderer();
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~TerminalRenderer() override;
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void Draw(Editor &ed) override;
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private:
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// Where a row's visible part starts (the draw loop's skip up to the
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// horizontal scroll offset), cached per screen row. Scanning a very long
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// line from column 0 on every frame made each redraw O(line length).
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struct SkipCache {
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const void *buf = nullptr;
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std::uint64_t version = 0;
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std::size_t row = 0;
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std::size_t coloffs = 0;
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std::size_t src = 0; // byte offset where drawing resumes
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std::size_t col = 0; // render column at that offset
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bool valid = false;
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};
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std::vector<SkipCache> skip_cache_;
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// Render column of the cursor, cached the same way.
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struct CursorCache {
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const void *buf = nullptr;
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std::uint64_t version = 0;
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std::size_t row = 0;
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std::size_t cx = 0;
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std::size_t rx = 0;
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bool valid = false;
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} cursor_cache_;
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};
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