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(cherry picked from commit 510fefdc625dd2ed2b6b3975314a59e291b94ae8)
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(#124029)
gh-124027: Support Del, PgUp, and PgDn on TERM=vt100 (GH-124028)
pyrepl: Support Del, PgUp, and PgDn on TERM=vt100
From Fedora's /etc/inputrc:
"\e[5~": history-search-backward
"\e[6~": history-search-forward
"\e[3~": delete-char
Fixes https://github.com/python/cpython/issues/124027
(cherry picked from commit f4e5643df64d0c2a009ed224560044b3409a47c0)
Co-authored-by: Miro Hrončok <miro@hroncok.cz>
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(#123799)
This switches the main pyrepl event loop to always be non-blocking so that it
can listen to incoming interruptions from other threads.
This also resolves invalid display of exceptions from other threads
(gh-123178).
This also fixes freezes with pasting and an active input hook.
(cherry picked from commit 033510e11dff742d9626b9fd895925ac77f566f1)
Co-authored-by: Łukasz Langa <lukasz@langa.pl>
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gh-123177: Fix prompt for wrapped lines in pyrepl (GH-123324)
When display lines above the cursor come from the cache, the first line
to not come from the cache may be a wrapped line, starting half way
through a logical line in the buffer. Detect and handle this case to
avoid accidentally drawing a stray prompt in the middle of a logical
line.
(cherry picked from commit 602fcf97df1665538d4e9841f9dc6bc33e38bece)
Co-authored-by: Matt Wozniski <mwozniski@bloomberg.net>
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(#122451)
gh-119896: Fix CTRL-Z behavior in the new REPL on Windows (GH-122217)
(cherry picked from commit d1a1bca1f0550a4715f1bf32b1586caa7bc4487b)
Co-authored-by: Dino Viehland <dinoviehland@meta.com>
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(cherry picked from commit 6522f0e438a8c56a8f3cce2095b193ea6e3f5016)
Co-authored-by: Rodrigo Girão Serrão <5621605+rodrigogiraoserrao@users.noreply.github.com>
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joiner (GH-121667) (#121733)
Co-authored-by: Marta Gómez Macías <mgmacias@google.com>
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(#121679)
gh-121499: Fix multi-line history rendering in the REPL (GH-121531)
(cherry picked from commit 4b9e10d0ea352592049c1f2a00318d7274143fa4)
Signed-off-by: Pablo Galindo <pablogsal@gmail.com>
Co-authored-by: Pablo Galindo Salgado <Pablogsal@gmail.com>
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gh-119517: Fixes for pasting in pyrepl (GH-120253)
* Remove pyrepl's optimization for self-insert
This will be replaced by a less specialized optimization.
* Use line-buffering when pyrepl echoes pastes
Previously echoing was totally suppressed until the entire command had
been pasted and the terminal ended paste mode, but this gives the user
no feedback to indicate that an operation is in progress. Drawing
something to the screen once per line strikes a balance between
perceived responsiveness and performance.
* Remove dead code from pyrepl
`msg_at_bottom` is always true.
* Speed up pyrepl's screen rendering computation
The Reader in pyrepl doesn't hold a complete representation of the
screen area being drawn as persistent state. Instead, it recomputes it,
on each keypress. This is fast enough for a few hundred bytes, but
incredibly slow as the input buffer grows into the kilobytes (likely
because of pasting).
Rather than making some expensive and expansive changes to the repl's
internal representation of the screen, add some caching: remember some
data from one refresh to the next about what was drawn to the screen
and, if we don't find anything that has invalidated the results that
were computed last time around, reuse them. To keep this caching as
simple as possible, all we'll do is look for lines in the buffer that
were above the cursor the last time we were asked to update the screen,
and that are still above the cursor now. We assume that nothing can
affect a line that comes before both the old and new cursor location
without us being informed. Based on this assumption, we can reuse old
lines, which drastically speeds up the overwhelmingly common case where
the user is typing near the end of the buffer.
* Speed up pyrepl prompt drawing
Cache the `can_colorize()` call rather than repeatedly recomputing it.
This call looks up an environment variable, and is called once per
character typed at the REPL. The environment variable lookup shows up as
a hot spot when profiling, and we don't expect this to change while the
REPL is running.
* Speed up pasting multiple lines into the REPL
Previously, we were checking whether the command should be accepted each
time a line break was encountered, but that's not the expected behavior.
In bracketed paste mode, we expect everything pasted to be part of
a single block of code, and encountering a newline shouldn't behave like
a user pressing <Enter> to execute a command. The user should always
have a chance to review the pasted command before running it.
* Use a read buffer for input in pyrepl
Previously we were reading one byte at a time, which causes much slower
IO than necessary. Instead, read in chunks, processing previously read
data before asking for more.
* Optimize finding width of a single character
`wlen` finds the width of a multi-character string by adding up the
width of each character, and then subtracting the width of any escape
sequences. It's often called for single character strings, however,
which can't possibly contain escape sequences. Optimize for that case.
* Optimize disp_str for ASCII characters
Since every ASCII character is known to display as single width, we can
avoid not only the Unicode data lookup in `disp_str` but also the one
hidden in `str_width` for them.
* Speed up cursor movements in long pyrepl commands
When the current pyrepl command buffer contains many lines, scrolling up
becomes slow. We have optimizations in place to reuse lines above the
cursor position from one refresh to the next, but don't currently try to
reuse lines below the cursor position in the same way, so we wind up
with quadratic behavior where all lines of the buffer below the cursor
are recomputed each time the cursor moves up another line.
Optimize this by only computing one screen's worth of lines beyond the
cursor position. Any lines beyond that can't possibly be shown by the
console, and bounding this makes scrolling up have linear time
complexity instead.
---------
(cherry picked from commit 32a0faba439b239d7b0c242c1e3cd2025c52b8cf)
Signed-off-by: Matt Wozniski <mwozniski@bloomberg.net>
Co-authored-by: Matt Wozniski <mwozniski@bloomberg.net>
Co-authored-by: Pablo Galindo <pablogsal@gmail.com>
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(cherry picked from commit d9095194dde27eaabfc0b86a11989cdb9a2acfe1)
Signed-off-by: Pablo Galindo <pablogsal@gmail.com>
Co-authored-by: Pablo Galindo Salgado <Pablogsal@gmail.com>
Co-authored-by: Michael Droettboom <mdboom@gmail.com>
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containing ANSI escape codes (GH-119942) (#119990)
gh-118835: pyrepl: Fix prompt length computation for custom prompts containing ANSI escape codes (GH-119942)
(cherry picked from commit 2e0aa731aebb8ef3d89ada82f5d39b1bbac65d1f)
Co-authored-by: Daniel Hollas <daniel.hollas@bristol.ac.uk>
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(cherry picked from commit 2237946af0981c46dc7d3886477e425ccfb37f28)
Co-authored-by: Łukasz Langa <lukasz@langa.pl>
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(cherry picked from commit 0d07182821fad7b95a043d006f1ce13a2d22edcb)
Co-authored-by: Dino Viehland <dinoviehland@gmail.com>
Co-authored-by: Anthony Shaw <anthony.p.shaw@gmail.com>
Co-authored-by: Łukasz Langa <lukasz@langa.pl>
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gh-119548: Add a 'clear' command to the REPL (GH-119549)
(cherry picked from commit e3bac04c37f6823cebc74d97feae0e0c25818b31)
Co-authored-by: Pablo Galindo Salgado <Pablogsal@gmail.com>
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(#119439)
(cherry picked from commit e6572e8f98d33994d2d0dd3afa92a2a72ee642a9)
Also includes:
* gh-111201: Use calc_complete_screen after bracketed paste in PyREPL (GH-119432)
(cherry picked from commit 14b063cbf1bb11a489d04a31f277edba0fc8893c)
Co-authored-by: Pablo Galindo Salgado <Pablogsal@gmail.com>
Co-authored-by: Łukasz Langa <lukasz@langa.pl>
Co-authored-by: Lysandros Nikolaou <lisandrosnik@gmail.com>
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(GH-119435) (#119441)
Fix culmitive errors in wrapping as lines proceed
(cherry picked from commit e3bf5381fd056d0bbdd775463e3724aab2012e45)
Co-authored-by: Dino Viehland <dinoviehland@gmail.com>
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(GH-119274) (#119405)
(cherry picked from commit c886bece3b3a49f8a0f188aecfc1d6ff89d281e6)
Co-authored-by: Lysandros Nikolaou <lisandrosnik@gmail.com>
Co-authored-by: Łukasz Langa <lukasz@langa.pl>
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repl (GH-119248) (#119323)
add word-skipping ctrl keybindings to new repl
(cherry picked from commit 0398d9339217aa0710c0de45a7e9b587136e7129)
Co-authored-by: Alastair Stanley <alastairstanley@ntlworld.com>
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(#118712)
Co-authored-by: Łukasz Langa <lukasz@langa.pl>
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Co-authored-by: Łukasz Langa <lukasz@langa.pl>
Co-authored-by: Marta Gómez Macías <mgmacias@google.com>
Co-authored-by: Lysandros Nikolaou <lisandrosnik@gmail.com>
Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>
Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>
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