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# Conflicts:
# src/screen.c
# tests/term_test.c
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# Conflicts:
# src/screen.c
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# Conflicts:
# src/screen.c
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term_write_begin spun on an atomic sequence word. A waiter burned CPU,
and with no priority inheritance a SCHED_FIFO waiter could starve a
preempted holder on the same CPU. The writer section is now a pthread
mutex with PTHREAD_PRIO_INHERIT where the platform has it, and an SRWLOCK
on Windows. Re-entry on the owning thread still only counts the depth.
The platform wrapper (init, lock, unlock, destroy) is in compat.h. term_new
initializes the mutex, and term_free destroys it. Meson links the thread
library into the core, term_dep, and term_internal_dep. The README,
term.h, and the amalgamation note say that POSIX needs -pthread.
Tests: the feed and snapshot thread test now checks the final screen and
history against a serial reference. A new test checks that term_lock
nests and that another thread waits for the last term_unlock.
Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>
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The core hard-coded "wsap_term" for XTVERSION, the XTGETTCAP TN and
name default, and the OSC 9 notification title. A headless library
should take its identity from the host.
term_options.name sets the name. NULL or "" selects "term". term_new()
copies it and returns NULL unless it is 1 to 63 printable ASCII bytes,
since DCS replies echo it. A DCS +p still changes the TN value, and
the XTVERSION and notification defaults keep the host name.
Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>
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term_feed() returns bool and rejects a NULL terminal, a NULL buffer with
a nonzero length, and any flag bit it does not know. Unknown bits are
rejected now so that later flags can be added without changing what the
old calls mean.
term_new() returns NULL for a negative size component, columns above
TERM_MAX_COLS, a negative scrollback, or a cursor style outside the enum.
Zero still selects the default size and scrollback. It no longer clamps
bad values silently.
term_resize() rejects columns above TERM_MAX_COLS instead of clamping
them, which matches how it already rejects a size below 1.
Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>
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The shared library now carries its major version in the SONAME
(libterm.so.0), so an ABI break gets a new file name. The header
gains TERM_VERSION, TERM_VERSION_MAJOR/MINOR/PATCH and
TERM_VERSION_CODE, and term_version() returns the code the library was
built with. A test checks the macros against meson.build's project
version and against the runtime value.
term_options ends with uint32_t reserved[8]. term_new() returns NULL if
a word is nonzero, so later versions can give those words a meaning
without misreading a caller's leftover data. All-zero options stay
valid.
Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>
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The snapshot getters crashed on a NULL snapshot, unlike the rest of the
API. They now return NULL, an empty span, 0, or write nothing, as the
terminal functions do. term_snapshot_cluster writes nothing when cps is
NULL or cap is 0.
Document that the view and its palette keep their address for the life
of the snapshot, and that a row pointer lasts only until the next update
or free, since an update can realloc the cell array.
Rename the term_input.h include guard to TERM_INPUT_H to match the file.
Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>
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Make text queries return allocated strings released with term_text_free, keeping each capture atomic. Align public attributes with the write core, remove snapshot conversion tables, and migrate tests and the Kitty adapter.
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Account for cluster records discarded by snapshot scrolling, propagate snapshot allocation failures with an empty retryable view, and allocate resized screens before mutating visible state. Add bounded-memory and allocation-failure regressions, and update the saved diagnostic and audit report.
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subparts
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- Encode buttons 8 through 11 (EXTRA_1..4) with offset 128 (128..131)
per xterm mouse tracking, resolving collisions with the Alt modifier bit (8)
- Drop EXTRA_5 from enum term_mouse_button since xterm mouse tracking defines
four extra buttons (8 to 11) and codes beyond 131 collide with modifier bits
- Replace literal 3 with TERM_MOUSE_BUTTON_NONE for hover motion check in mode 1002
- Document button field semantics in struct term_mouse_event for press, release,
motion, and scroll events
- Document OSC 52 target buffer selections ("c", "p", "q", "s", "0".."7") in term.h
- Add unit tests for extra button encoding, SGR release, hover motion suppression
in mode 1002, and non-collision with Alt modifiers
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- Introduce struct text_pen bundling (fg, bg, sl) across screen and core
- Reduce text_append from 9 to 7 parameters
- Reduce text_commit from 8 to 6 parameters
- Reduce hist_runs_add_pen from 5 to 3 parameters
- Reduce sc_text_ascii and sc_ascii_fast from 6 to 4 parameters
- Remove unused fg, bg parameters from mark_row_blank
- Introduce struct hist_stream_state in src/hist.c, reducing stream_lines from 9 to 5 params and lf_rows from 10 to 6 params
- Introduce struct hist_view_pos in src/hist_view.h, reducing term_hist_view_row_pos from 9 to 7 params
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- Create struct stream_emit_ctx packing stream queue arguments into 1 cache line
- Reduce emit_stream_bulk_wrapped from 13 parameters to 3
- Reduce flush_stream_queue from 10 parameters to 1
- Extract stream_queue_finish to eliminate duplicated cleanup in kernel instantiations
- Replace EMIT_STREAM_ROW macros with typed inline functions
- Move pending_wrap clearing directly into term_screen_erase, insert, delete, and scroll
- Remove sc_erase_display, sc_erase_line, sc_insert_chars, and sc_delete_chars wrappers
- Consolidate term_row and remove duplicated row_fill_gap helper
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- Batch full-screen scroll rotations, eliminating row-by-row scroll loops
- Use block memmove for sub-region scrolling, eliminating heap/stack row swaps
- Vectorize CELL_WRAP_PAD flag setting with AVX2/SSE2/NEON in screen.h
- Replace scalar tab-stop loops with 64-bit word stamping
- Optimize active row backwards scan in resize and erase mode 2
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- Unroll fast paths in put_varint and get_varint
- Replace while capacity loop with branchless term_grow_cap in runs_reserve
- Vectorize continuation ring rehash with slice memcpy in cont_push
- Fast-check simple line runs using combined bitwise XOR-OR mask in evict_simple_run
- Resume batch simple-run eviction on interrupted sweeps in evict_for
- Eliminate unused page_rows and page_simple allocations (>320 KB heap saved)
- Add zero-delta bypass in Fenwick tree set_count
- Replace iterative capacity loop with branchless term_next_pow2_32 in hist_view_sync
- Eliminate prefix-walk in term_hist_view_find_row by reusing Fenwick remainder
- Simplify upward and downward viewport movement in term_hist_view_scroll
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- Replace sequential colon-counting loop with branchless CTZ bitmask in src/pen.h
- Replace linear strchr with 256-bit ASCII punctuation bitmask in src/selection.c
- Flatten 3D color cube loop and precompute constants in src/palette.c
- Use static 256-byte LUT for hex decoding and bsearch for termcap in src/escape.c
- Replace capacity doubling while loops with branchless CLZ pow2 helpers across core
- Use direct memset/memcpy in src/snapshot.c
- Optimize input digit/byte formatting, alt-prefix path, and make keyboard state optional in src/input.c
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The core now builds, tests, and benchmarks alone, as a Meson subproject
with no dependency on the main tree.
- include/term/ holds term.h and the header-only unicode/. src/ holds
the core and its private headers. The main tree gets only
include/term through term_dep, so it cannot reach a private header.
- The term tests, the term benchmarks, the Kitty parser suite, and
tools/amalgamate.py and tools/generate_unicode.py move with it. The
tests run as term:<name>.
- The main build passes its -march (arch_flag) and b_ndebug to the
subproject. A directory configured before this commit needs
meson configure -Dterm:arch_flag=-march=... once.
- The term tests compile with -UNDEBUG. They do work inside assert.
- The subproject exports term_test_dep with term_api.h, for the main
tree's render, thumbnail, color, and selection tests.
- The Kitty bridge used struct vector2i and has not compiled since the
public API redesign. It builds again. 2 of its 14 tests fail: REP
after a tab, and a cursor report after a resize.
- dirgraph.py drops the term and unicode layers. Its self-test uses pty.
- The symbols test ignores the __odr_asan symbols that ASan adds.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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