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Title: Migrate from using readline to prompt-toolkit by tleonhardt · Pull Request #1553 · python-cmd2/cmd2 · GitHub

Open Graph Title: Migrate from using readline to prompt-toolkit by tleonhardt · Pull Request #1553 · python-cmd2/cmd2

X Title: Migrate from using readline to prompt-toolkit by tleonhardt · Pull Request #1553 · python-cmd2/cmd2

Description: This PR migrates from using GNU Readline for user input, tab-completion, and history to using prompt-toolkit for the same purpose. prompt-toolkit is a pure-Python readline replacement that is fully...

Open Graph Description: This PR migrates from using GNU Readline for user input, tab-completion, and history to using prompt-toolkit for the same purpose. prompt-toolkit is a pure-Python readline replacement that is fully...

X Description: This PR migrates from using GNU Readline for user input, tab-completion, and history to using prompt-toolkit for the same purpose. prompt-toolkit is a pure-Python readline replacement that is fully...

Opengraph URL: https://github.com/python-cmd2/cmd2/pull/1553

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This is a very early non-working start of porting to use prompt-toolkithttps://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/0aa3a064ab1cc8db33165e3e104171e9fb10f3fa
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Fix complete_tester helper function in conftest.py so it passes all o…https://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/e46744a32300d626cf05d440a99dfdd5206faae1
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Remove remaining use of readline in cmd2.py and replace it with promp…https://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/9b12dd2b7f440898ce266d00586d08b56592590e
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Replace readline with prompt-toolkit in documentation and suchhttps://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/ef36ba2df2572e5cadea37db6a4134e78767f909
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Fix one history testhttps://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/3d05273ee2aff927c0e1782ba5d46daf31fb1d25
3d05273https://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/3d05273ee2aff927c0e1782ba5d46daf31fb1d25
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Remove reference to readline from test_history.pyhttps://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/0a08c6906786d1b39991648f45ba17362b1bf690
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prompt-toolkit history now properly working with a persistent history…https://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/e4c8abea3c7b611abe17e62812b4528ce1d4be85
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Deleted rl_utils.py and removed all use of ithttps://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/5906d0eed7c0bc6747c47b1a2b7e9145e48cf296
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Add test_escaping_prompt test back but skip it for now with a TODOhttps://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/6c85dca0dce51722199ca4cdac1b5177a52734b5
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Fix tests in tests_cmd2.py to monkeypatch cmd2.Cmd.read_input instead…https://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/d405a4f452b1f30af213ddce3374cf1e43da2cbf
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Fix remaining tests in test_cmd2.py other than the one that is skippedhttps://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/92faadc2fa988e5f010f7878db00c6b3ead4ca12
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Renamed test_escaping_prompt to test_visible_prompt and fixed it to w…https://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/894368af57cc1526d243f59bcf2ce4be64692f3a
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Fixed tests in test_run_pyscript for prompt-toolkit migrationhttps://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/100a98f18c39c65b7f343727a70bdfeecb91b66b
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Added test_pt_utils.py with unit tests to fully cover code in cmd2/pt…https://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/798d400083e873ec17f91349aa76c2104dfaed91
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Add 4.0.0 changes to CHANGELOG with details on readline migration to …https://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/ca4a6e7bfa4ff3767e052515797076af9c34689b
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Merge branch 'main' into prompt-toolkithttps://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/165e02e152d51decc1f674c6d52efce6dc9b2d4a
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Fixed bug where argument hints weren't displaying in color.https://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/61cd1c04ad4297647a1f44f1ea39d96cabd6bcfb
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tleonhardthttps://patch-diff.githubusercontent.com/tleonhardt
Dec 29, 2025 https://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553#ref-issue-3703922615
cmd2 4.0 discussion #1538 https://patch-diff.githubusercontent.com/python-cmd2/cmd2/issues/1538
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December 29, 2025 19:03https://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553#commits-pushed-c263b38
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Fix NoConsoleScreenBufferError on Windows CI by robustly initializing…https://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/c263b3845c8a386f46571d8dda7020a6057a2487
c263b38https://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/c263b3845c8a386f46571d8dda7020a6057a2487
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Optimize GitHub Actions workflow by using PowerShell on Windows runne…https://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/59c5ffa70dccb2ec8a6e9d4a57816292525510e3
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Revert "Optimize GitHub Actions workflow by using PowerShell on Windo…https://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/9aa7767cc494a0b63ba1cd6915f6a071c82139a1
9aa7767https://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/9aa7767cc494a0b63ba1cd6915f6a071c82139a1
59c5ffahttps://github.com/python-cmd2/cmd2/commit/59c5ffa70dccb2ec8a6e9d4a57816292525510e3
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Try setting shell on Windows test runnershttps://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/0705adc60d175d42ddc172fe1832a071e31571a5
0705adchttps://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/0705adc60d175d42ddc172fe1832a071e31571a5
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Try setting separate test steps for Windows vs Linux/Machttps://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/d0bf798b6621e64bfdd94599196ba7620bd6339c
d0bf798https://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/d0bf798b6621e64bfdd94599196ba7620bd6339c
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January 19, 2026 13:26https://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553#commits-pushed-378bd01
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Fix ppaged UnboundLocalError on Windowshttps://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/378bd018c356607644717b7a66590a616613dbf4
378bd01https://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/378bd018c356607644717b7a66590a616613dbf4
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Replace terminal_lock with asyncio in async_alerthttps://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/478035ffaffdd2effb29f65e2d48842ca9a8eade
478035fhttps://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/478035ffaffdd2effb29f65e2d48842ca9a8eade
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Convert async_printing example to asynciohttps://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/d3b3db305c592aa04adfbe97c39329292ec84dc3
d3b3db3https://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/d3b3db305c592aa04adfbe97c39329292ec84dc3
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Fix test_pre_prompt_running_loophttps://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/236a672698c56a93e7bbd20c12435237c8df46c0
236a672https://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/236a672698c56a93e7bbd20c12435237c8df46c0
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Updated CHANGELOG with info on recent changeshttps://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/0d9137dd62ae93872845c9f0a80a35d418b521fd
0d9137dhttps://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/0d9137dd62ae93872845c9f0a80a35d418b521fd
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Skip problematic test on Windowshttps://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/200be005ceb7283f34feace799dedfbb64818e3a
200be00https://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/200be005ceb7283f34feace799dedfbb64818e3a
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Merge branch 'main' into prompt-toolkithttps://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/dcd918303a925161c7b3c7ab6bed301224b36cce
dcd9183https://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/dcd918303a925161c7b3c7ab6bed301224b36cce
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Added flag to configure prompt-toolkit tab-completion stylehttps://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/358ffe53ac30297447464007380d9db6f21f5e14
358ffe5https://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/358ffe53ac30297447464007380d9db6f21f5e14
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Updated docstring for cmd2.Cmd.complete_style parameterhttps://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/2bb52e2835dd873e30b4feee533a240cd38ad3ed
2bb52e2https://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/2bb52e2835dd873e30b4feee533a240cd38ad3ed
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Updated basic_completion.py example to use MULTI_COLUMN style completionhttps://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/af83fdf71c58202dea2c1c581a87679cecd7f336
af83fdfhttps://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/af83fdf71c58202dea2c1c581a87679cecd7f336
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Fixed logic for printing completion hint to respect `always_show_hint…https://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/eda97d3dc102f4d81667e35b2cd5b6b27b3ac15b
eda97d3https://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/eda97d3dc102f4d81667e35b2cd5b6b27b3ac15b
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Remove unused async_refresh_prompt and need_prompt_refresh methodshttps://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/e51078ecf7ee3db87bcabc9fa4268afcf6c7316e
e51078ehttps://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/e51078ecf7ee3db87bcabc9fa4268afcf6c7316e
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Dynamically switch completion style based on result counthttps://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/0763d8b2fe3b9c65407ef6c92e3a83c4c678e277
0763d8bhttps://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/0763d8b2fe3b9c65407ef6c92e3a83c4c678e277
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Added max_column_completion_items init param and default it to 7https://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/9f88697170211cd870035fb4d9c2530d5960d289
9f88697https://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/9f88697170211cd870035fb4d9c2530d5960d289
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Merge branch 'main' into prompt-toolkithttps://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/d18fc472cc073e15716c0ac10fb5a4b7fa7cd54d
d18fc47https://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/d18fc472cc073e15716c0ac10fb5a4b7fa7cd54d
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Merge branch 'main' into prompt-toolkithttps://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/a07e57c3fa645d2389885db01eeccadbe603faa0
a07e57chttps://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/a07e57c3fa645d2389885db01eeccadbe603faa0
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Fix bug where tab completion didn't work in embedded Python shell whe…https://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/75400bc3ff427b0e0de733aa735ebf17cbc5afda
75400bchttps://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/75400bc3ff427b0e0de733aa735ebf17cbc5afda
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Don't attempt to run termios or readline stuff on Windowshttps://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/b0189079707d66a5825a9867e8706000efe2a81c
b018907https://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/b0189079707d66a5825a9867e8706000efe2a81c
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Finish fixing type errors on windowshttps://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/810b50c3becec6fb81731d98fee169df4bb81cbe
810b50chttps://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/810b50c3becec6fb81731d98fee169df4bb81cbe
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Skip tests for embedded python shell tab-completion on Windowshttps://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/bf1f8a49568b8ceac84eb6a8ff4d1d383c488af9
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Fix race condition in async_alert using lock and is_running checkhttps://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/6b697531ea84b0cb4f89ffd5fd03135999f4ea8a
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Add async commands example and documentationhttps://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/a311dec0c22ea05281cc6aec7a6fd46b4b8d2eea
a311dechttps://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/a311dec0c22ea05281cc6aec7a6fd46b4b8d2eea
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Added links to documenation and example for async commandshttps://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/06fe45eb0eeb8afa24a779b361641d037eff196f
06fe45ehttps://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/06fe45eb0eeb8afa24a779b361641d037eff196f
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Add unit tests for terminal restoration within ppagedhttps://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/4b9353522d13813f5f56ff55128ac3bd037c93e3
4b93535https://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/4b9353522d13813f5f56ff55128ac3bd037c93e3
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Skip tests on windows that use termioshttps://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/398ef0811c8caa0dc1d6bf19d6ec9bc834b5dd72
398ef08https://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/398ef0811c8caa0dc1d6bf19d6ec9bc834b5dd72
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Attempt to cover some code codecov says is missing coveragehttps://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/d6117d504d15d22744db0d45cca456210ab41cdd
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Improve async_commands.py example by cleaning up uncancelled async ta…https://patch-diff.githubusercontent.com/python-cmd2/cmd2/pull/1553/commits/d11a2f7b2e9d48950940df8f71a7082ec9bfb463
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