What’s New in Leo

What’s new in Leo 6.8.3

What’s new in Leo 6.8.2

Most important:

  • PR #4119 and PR #4138: @jupytext makes it easy to work with Jupyter notebooks!

  • PR #4033: Add four new layouts and related code and commands.

Others:

  • PR #4038: Add reload-outline command.

  • PR #4068: Optionally run pylint when saving changed files.

  • PR #4071: Optionally run Leo’s beautifier when saving changed files.

Retired features:

  • PR #4047: Delete add-editor command and all related code.

  • PR #4113: Retire ILeo, Leo’s IPython bridge. It hasn’t worked in years.

What’s new in Leo 6.8.0

Breaking changes to Leo’s API

  • PR #3828: Leo now requires PyQt6. Plugins that use earlier versions will break.

  • PR #3911: Leo’s core no longer uses the free_layout or nested_splitter plugins. Scripts that rely on c.free_layout or the NestedSplitter class must be rewritten.

  • PR #3872: Improve how Leo searches for definitions: - Add @bool prefer-nav-pane setting. - This PR changes the signatures of LeoFind.find_def and LeoFind.find_var.

  • PR #3979: Change name of save-file-as-zipped command to save-file-as-db and change the name of the corresponding method.

Other significant changes

  • PR #3841: Add g.traceUnique and g.traceUniqueClass functions.

  • PR #3870: Leo’s beautifier works faster.

  • PR #3893: Add vr-fully-expand, vr-toggle-visibility and vr-keep-open commands.

  • PR #3902: Add the toggle-unl-view command.

  • PR #3921: Add the show-qt-widgets command.

  • PR #3922: Improved the restart-leo command.

What’s new in Leo 6.7

What’s new in Leo 6.7.8

This release simplifies Leo’s install process. See https://leo-editor.github.io/leo-editor/getting-started.html

  • PR #3757: (leoTokens.py) Make Leo’s beautifier 3x faster.

  • PR #3771: Revert colorizing of f-strings.

  • PR #3786: Support Nim.

  • PR #3790: Add “get-unl” command to Leo’s server.

  • PR #3805: Fix problems with auto-completion and calltips.

  • PR #3806: Fix problems with Leo’s go-back and go-forward commands.

  • PR #3807: Improve Leo’s Python importer.

  • PR #3817: Allow relative paths in gnx-based UNLs.

What’s new in Leo 6.7.7

  • PR #3761: Improve leoserver.py to support LeoInteg.

What’s new in Leo 6.7.6

Support for Python 3.12:

  • PR #3693: update leoAst.py for Python 3.12.

  • PR #3701: Colorize PEP 701 f-strings.

Other significant improvements:

  • PR #3645: Allow mixed external files on the command line.

    Retire the –load-type command-line option.

  • PR #3575: Add the indented_languages plugin.

  • PR #3642: Add the clean-all-lines command.

  • PR #3659: Add python-to-rust command.

  • PR #3673: Add summarize command.

  • scripts.leo contains @button scripts by Thomas Passin.

What’s new in Leo 6.7.5

Other improvements

  • PR #3560: Retire the g.SherlockTracer class.

  • PR #3552: Clear dirty bits when writing sqLite DBs.

  • PR #3541: Use c.doCommandByName instead of c.k.simulateCommand.

  • PR #3538: Make file-diff-files undoable.

  • PR #3533: Reload outlines rather than restarting Leo.

  • PR #3531: Add move-outline-to-first-child & move-outline-to-last-child commands.

  • PR #3528: Fix copy-gnx command.

  • PR #3525: Add promote-section-references command.

  • PR #3521: Improve what-line command.

  • PR #3519: Make the mark-node-and-parents and unmark-node-and-parents commands undoable.

  • PR #3503: Fix bug involving back slashes in search patterns.

  • PR #3499: Retire the read-outline-only command.

  • PR #3607: Add Scheme importer.

What’s new in Leo 6.7.4

Warning: breaking changes to Leo’s api

p.get_UNL returns gnx-based unls. Previously it returned path-based gnxs. See the first comment of PR #3424 for full details.

PR #3433: Callers must remove the “fn” positional arg from at.readOneAtEditNode and at.readOneAtAsisNode.

gnx-based unls

New settings

  • @string unl-status-kind = gnx

  • @bool full-unl-paths = True

  • @data unl-path-prefixes

Other improvements

Large code changes:

  • PR #3365: Simplify all mypy annotations (128 files).

  • PR #3367: Import Callable from collections.abc instead of typing (50 files).

Retire three plugins

  • PR #3215: Retire the settings_finder, backlink, and quickMove plugins. The first was dangerous. gnx-based unls obsolete the other two.

  • 50+ issues and 70+ pull requests.

What’s new in Leo 6.7.3

  • PR #3260: Improved and safer handling of paths in @<file> nodes. Leo supports Python’s standard os.path expansions. Leo no longer supports {{python-expression}} in headlines.

  • Several large code cleanups: 460+ files changed.

Commands

  • PR #3227: Add commands to add/remove numbers from headlines.

  • PR #3255: Add write-zip-archive command.

  • PR #3192: Add show-color-settings and the show-font-settings commands.

Other changes

  • PR #3208: Add ‘reload-settings’ hook.

  • PR #3214: Optionally expand headlines on mouse-over.

  • PR #3224: Improve mod_autosave plugin.

  • PR #3241: Simplify Leo’s path wrappers.

  • PR #3264 and PR #3277: Simplify Leo’s path-related code.

  • 20+ issues and 30+ pull requests.

What’s new in Leo 6.7.2

Leo’s website has moved to Github Pages: https://leo-editor.github.io/leo-editor/

  • PR #3019: Host Leo’s website using GitHub pages.

Commands:

  • PR #3031: Add check-nodes command. It helps keep @clean files in sync.

  • PR #3056: Leo’s beautify command is now PEP8 compliant.

  • PR #3140: Run pylint on node.

  • PR #3166: Add the execute-external-file command.

Settings and features:

  • PR #2979: Add @bool run-flake8-on-write setting.

  • PR #2983: Add --black-sentinels command-line option.

  • PR #3038: Add @string rst3-action setting.

  • PR #3053: Add @string gxn-kind setting: Support gnxs formatted as UUIDs.

  • PR #3132: Add @bool rst3-remove-leo-directives setting.

Bugs

What’s new in Leo 6.7.1

  • Several enhancements to leoserver.py.

  • Add support for ocaml syntax coloring.

  • Improve markdown importer.

  • @bool plain-key-outline-search = False by default.

  • Several minor code cleanups.

  • Delete cascade-windows, flush-lines, keep-lines and open-offline-tutorial commands.

What’s new in Leo 6.7.0

  • Leo now requires Python 3.9 or later.

  • Enhance leoserver.py to support LeoInteg and LeoJS.

  • Importers no longer generate underindented escape strings.

  • Delete all of Leo’s cover- and test- commands.

  • Allow unit tests to run with the Qt gui.

  • Several mass code updates:

    • Annotate Leo’s core files and important plugins.

    • Simplify all of Leo’s importers.

    • Speed Leo’s redraw code by rewriting Leo’s icon drawing logic.

    • Retire Tk indices, except in unit tests.

What’s new in Leo 6.6 and earlier

What’s new in Leo 6.6.4

  • Enhance leoserver.py to support LeoInteg and LeoJS.

  • Simplify all of Leo’s importers.

  • Importers no longer generate underindented escape strings.

  • Begin annotating Leo’s core files.

  • The usual assortment of minor bug fixes.

What’s new in Leo 6.6.3

  • Enhance leoserver.py to support LeoInteg and LeoJS.

  • Improve how Leo handles url’s.

  • Simplify the GlobalConfigManager class.

  • The usual assortment of tweaks and bug fixes.

What’s new in Leo 6.6.2

  • Add “File Only” option in Leo’s Find Pane.

  • Remove pylint-leo.py, pyflakes-leo.py and related code.

  • Add mypy annotations for Leo’s most important files.

What’s new in Leo 6.6.1

  • Improve support for Python 3.10 and PyQt6.

  • Simplify the TokenOrderGenerator class in leoAst.py.

  • Improve argument handling when running leo.core.leoAst externally. Run python -m leo.core.leoAst -h for details.

  • Control-clicking on a file name searches for the corresponding @<file> node.

  • Create clickable links when copying text into the log pane.

  • Leo’s mypy command runs without blocking Leo.

  • Improve the add-mypy-annotations command.

  • Clean all files with reindent.

What’s new in Leo 6.6

  • Replaced @raw and @end_raw with @section-delims.

  • Leo recognizes section references only when they appear on an otherwise blank line.

  • Many improvements to python-to-typescript command.

  • Improved python importer.

  • Added plugins/picture_viewer.py, a stand-alone app that displays images.

  • Added plugins/remove_duplicate_pictures.py, an app that finds duplicate pictures.

  • The user may choose other commands after starting repeat-complex-command.

  • Improved leoserver.py to support leointeg.

  • Many bug fixes.

What’s new in Leo 6.5

  • Add python-to-typescript and view-recent-commands.

  • Add c.findCommands.interactive_search_helper.

  • Leo now uses only traditional unit tests. Remove support for @test and @suite. Remove leoTest.py.

  • Many code-level cleanups.

What’s new in Leo 6.4

  • Support for LeoInteg: “Leo in vs-code”. - Add leoserver.py, stand-alone server for Leo. - Support .leojs, a json outline format.

  • Support for Qt6.

  • The wax_off.py script converts function annotations to stub (.pyi) files.

  • Remove support for @root. Create a conversion script.

  • Simplify and generalize rst3 command.

  • Add git-diff-pr command: Leonine diffs for Pull Requests and .leo files.

  • Add execute-general-script command and c.general_script_helper.

What’s new in Leo 6.3

Major features: - leoAst.py unifies the ast and token worlds. - Retired support for Qt docks. - Refactored Leo’s key handling code.

Features: - Merged leoPlugins.leo into LeoPluginsRef.leo - Added cython and rust importers - Improved C++, Javascript, Python, TypeScript importers. - Added 7 new commands. - Added support for @language json.

Fixed all known bugs.

What’s new in Leo 6.2

Commands:

  • Added the fstringify-files and diff-fstringify-files commands.

  • Improved the beautify-files command. Added the diff-beautify-files commands.

Code:

Features and settings:

  • Added importers for the rust language and todo.txt files.

  • Added the viewrendered3 plugin.

  • Leo’s legacy layout is now the default.

  • Removed unused settings from leoSettings.leo.

  • Added an importer for rust.

Bugs:

  • Fixed all known bugs, including some notable, long-standing bugs.

What’s new in Leo 6.1

The pyzo_in_leo plugin embeds pyzo (https://pyzo.org/) within Leo.

Added support for black: https://pypi.org/project/black/.

Added support for asciidoc, asciidoctor, pandoc and sphinx.

Added support for @language pandoc.

Added @nopyflakes directive.

The history_tracer plugin animates git commits.

New command-line arguments:

--global-docks
--window-spot

What’s new in Leo 6.0

Leo’s default gui uses Qt Docks. Use –no-dock to use Leo’s legacy gui.

New and improved commands and features:

  • Huge speed up of replace-all

  • Added find-long-lines. Uses @bool max-find-long-lines-length = 110

  • Added find-missing-docstrings. Honors @nopylint.

  • Added import-free-mind-files

  • Added print-window-state. This command is for Leo’s developers.

  • The pylint command generates clickable log messages and honor @nopylint.

  • Support colorizing of Lua long brackets

New command-line arguments:

–init-docks –no-dock –trace=aList https://github.com/leo-editor/leo-editor/issues/1145

New settings:

For the find-long-lines command: @bool max-find-long-lines-length = 110

For docks:

@bool dockable-log-tabs = False @string central-dock-widget = outline

What’s new in Leo 5.x

What’s new in Leo 5.9

  • LeoWapp: Leo in a browser.

  • Integrated debugger.

  • Support for pygments syntax coloring.

  • Automatic sessions (Removed –session-save and –session-restore command-line arguments.)

  • Nested @clean nodes, useful for LaTex files.

  • A major refactoring of the code that writes external files.

  • Better error recovery.

  • Support for continuous integration with TravisCI.

  • More than 50 minor bug fixes.

What’s new in Leo 5.8

  • Much faster file-read code.

  • Leo no longer caches file contents. Removed –no-cache!

  • Leo using ElementTree instead of sax to read .leo files.

  • Refactored and improved Leo’s key-handling code.

  • Improved Leo’s outline drawing code.

  • The usual minor bug fixes.

What’s new in Leo 5.7.3

  • Added support for Jedi autocompletion.

  • Much improved python_terminal plugin.

  • Much improved recursive import script.

  • New leo_babel plugin.

  • Leo’s pylint command writes clickable links.

  • Smart searches for functions and methods.

  • Allow separate bindings for numeric keypad keys

  • Added easy-to-use diff-related wrappers for scripts.

  • Allow local overrides of all abbreviations.

  • Improved TypeScript importer.

What’s new in Leo 5.7.2

  • Much improved support for Jupyter (.ipynb) files.

  • Fixed bugs that prevented switching between git branches easily.

  • Rewrote large parts of Leo’s key-handling code.

  • New command-line arguments to trace Leo’s code.

  • Removed about 20 unused settings.

What’s new in Leo 5.7.1

  • Improved support for themes

    • Added the open-theme-file command.

    • Added –theme=<name> command-line option.

    • Added @string theme-name setting.

    • Leo warns if stylesheets contain undefined @-constants.

  • Replaced 5 vs-* commands by corresponding eval* commands.

  • Support @file x.md using html sentinels.

  • Allow @path in @<file> nodes.

  • Added add_path keyword argument to c.recursiveImportScript. This setting adds @path directives to the root node of imported files.

Features

#850: Optionally convert Meta to Alt on MacOs https://github.com/leo-editor/leo-editor/issues/850 This feature is disabled by default. To enable, set @bool replace-meta-with-alt = True.

Settings

  • @bool replace-meta-with-alt.

What’s new in Leo 5.7

Highlights

  • Added Debian package for Leo.

  • pip install leo (After 5.7 final).

  • A web based Leo viewer, LeoVue, written by Joe Orr.

  • Outline-oriented diffs for .leo files.

  • New reload-settings command.

  • Leo optionally shows user tips on startup.

  • Added a new Tips page to Leo’s documentation.

  • A visual widget for editing cvs tables.

  • Improved the console_gui plugin.

  • Added live links from urls in the log pane.

  • Unit tests use a string gui, making them faster and more robust.

  • The line_numbering plugin shows line numbers in external files.

  • Added a TreePad importer.

Code

  • Unit tests can run in more environments.

  • The @g.commander_command decorator injects ivars into the Commands class.

  • Added CompareLeoOutlines class in leoCompare.py

  • Added verbose option to g.callers().

  • Revised redraw code.

  • Added backup-repo script in leoPy.leo.

  • Added c.backup_helper.

  • Added @button get-issues to LeoDocs.leo.

Commands

  • New commands:

    check-conventions
clean-main-spell-dict
clean-user-spell-dict
count-children
demangle-recent-files
diff-leo-files
diff-and-open-leo-files
edit-pane-csv
edit-pane-test-open
insert-as-first-child
insert-as-last-child
read-ref-file
set-ref-file
update-ref-file

  • The cff commands now sort their results.

Enhancements

Plugins

  • New plugins:

    patch_python_colorizer.py.
leo_cloud.py.
line_numbering.py

  • Improved the console_gui plugin.

Settings & command-line arguments

reinstated –trace-shutdown

What’s new in Leo 5.6

Highlights

  • A new console gui for Leo.

  • Added git-diff command

  • Added listen-to-log and kill-log-listen commands.

  • Added “yes/no to all” buttons for externally changed file dialog

  • Leo switches between git branches more smoothly.

#488: Created a console gui for Leo

A new chapter in Leo’s documentation: https://leo-editor.github.io/leo-editor//console-gui.html

https://github.com/leo-editor/leo-editor/issues/488

#501: git-diff command

https://github.com/leo-editor/leo-editor/issues/501

The new git-diff command shows the diffs between any uncommitted work and git’s HEAD in an outline. This is, by far, the best outline-oriented diff in Leo’s history. The command works for all kinds of external files.

Outline organization

This command creates a single tree as the last top-level node of the outline:

- git diff  # The single organizer node for the command
  - file A  # The organizer node for file A.
            # Body contains the text diff of the entire file.
    - Added # An organizer node for all added nodes, created only if necessary.
      - node 1 # A copy of the first added node.
      - node 2 # A copy of the second added node.
          ...
    - Deleted  # An organizer node for all deleted nodes, created only if necessary.
      - node 1 # A copy of the first deleted node.
          ...
    - Changed  # An organizer node for all changed nodes, created only if necessary.
      - node 1 # An organizer node for the changed node.
               #  Body contains the text diff of that node.
        - old: node1 # A copy of the old node.
        - new: node1 # A copy of the new node.

This command does not use git diff in any way. For example, moving a node affects only the overall diff in the organizer node for the file. Moved nodes do not otherwise appear in the diff.

Text diffs

Organizer nodes for files and changed nodes contain text diffs. Diffs look like this:

@language patch

--- HEAD
+++ uncommitted
@@ -553,8 +553,8 @@
             c1 = self.make_outline(fn, s1, self.rev1)
             c2 = self.make_outline(fn, s2, self.rev2)
             assert c1 and c2
-            for p in c1.all_positions():
-                print('%25s %s' % (p.gnx, p.h))
+            # for p in c1.all_positions():
+                # print('%25s %s' % (p.gnx, p.h))
             self.make_diff_outlines(fn, c1, c2)
             # try:
                 # c.disable_redraw()
@@ -578,6 +578,7 @@
...
@language python

Settings

leoSettings.leo contains new colorizer settings for @language patch.

Theory of operation

For each diffed file, this command uses a variant of the atFile read logic to create the corresponding outline in a hidden commander. Separate hidden commanders contain the “before” and “after” versions of the file. These outlines preserve gnx’s, so it is easy to create dicts of inserted, deleted and changed nodes. The command uses difflib (not git diff) to create all diffs, after the external file has been split into nodes.

#505: Leo switches between git branches properly

https://github.com/leo-editor/leo-editor/issues/505

The new code eliminates hidden time bombs when switching branches.

Changes to read/write code: - at.writeAll writes files at most once. - at.write updates cache. Previously only at.read updated the cache! - at.deleteUnvisitedNodes no longer creates resurrected nodes. - at.new_createThinChild4 always updates headlines. - at.terminateBody just sets v.tempRoots. It no longer calls at.indicateNodeChanged. - fc.handleNodeConflicts reports changed headlines differently.

Changes to cacher code: - Added cacher.checkForChangedNodes. - Added tempRoots logic. - Added always_warn switch to cacher.reportIfNodeChanged.

Added “yes/no to all” buttons for externally changed file dialog

Rev 9c94fec36d adds Yes / no to all on external file changes.

If you answer yes to all or no to all Leo remembers that answer for 3 seconds. As a result, another set of external changes will show the pop up again.

Code

  • Removed confusing “atAuto” switch from AtFile class.

  • Rewrote Leo’s at-file read code.

  • Rewrote Leo’s redraw code, adding c.redraw_later.

  • Unit tests now work on all all platforms without failing.

Commands

Added the following commands:

  • edit-recent-files and write-edited-recent-files

  • goto-any-clone

  • help-for-settings

  • listen-to-log and kill-log-listen

  • push-cursor and pop_cursor

  • show-color-names and show-color-wheel

  • start-of-line and finish-line

  • toggle-auto-edit

  • vr-zoom

  • vs-eval-block (valuescript plugin)

Improved the following commands:

  • clone-find*

  • indent-region and unindent-region

  • move-lines-up and move-lines-down

  • paste-retaining-clones now works across different .leo files

  • replace-all is much faster.

Other features

  • Added tcl importer.

  • Added lua importer.

  • Improved xml and html importers.

  • Improved Windows menu.

  • Improved caching of files.

  • Improved operation of command history.

  • Optionally show timestamps when writing files.

  • The viewrendered.py plugin renders LaTex (Python 2.x only)

Settings & command-line arguments

  • Added –trace-focus command-line argument.

  • Added @bool color_trailing_whitespace = True

  • Added @bool log_show_save_time = False

  • Added @bool report_unchanged_files = True

  • Added @bool run_pyflakes_on_unchanged_files = True

  • Added @color trailing_whitespace_color = red

  • Added @string log_timestamp_format = %H:%M:%S

  • Ctrl-Shift-< and Ctrl-Shift-> are now bound to indent/unindent-region. These can be used when no text is selected.

  • Restored default: @bool check_for_changed_external_files = True

What’s new in Leo 5.5

Highlights

  • Optionally run pyflakes when saving files.

  • Fixed huge performance bug in syntax coloring. The horrible big text hack is no longer needed.

  • Leo no longer hangs waiting for the pylint command to finish.

Created new @button scripts

  • at-button make-importer Make a new @@file importers/x.py file.

  • at-button make-md-heads Create markdown headers throughout the nearest .md outline.

  • at-button make-md-toc Make a markdown table of contents from an @auto-md node.

  • at-button make-table Create a table of expected headlines in a unit test.

Code

  • Added four new generators: c.all_roots, c.all_unique_roots, p.nearest_roots and p.nearest.

  • Created singleton BackgroundProcessManager

  • Integrated idle-hook processing into the IdleTimeManager

Features

  • You can open all important .leo files from the File menu.

  • <Alt-X>99 is the same as <Alt-G>99.

  • Script abbreviations are allowed in headlines.

  • The markdown importer now regularizes sections.

Settings

  • @bool autojustify-on-at-start

  • @bool color-doc-parts-as-rest

  • @bool run-pyflakes-on-write

  • @bool tree-declutter = True

  • @data tree-declutter-patterns

Command-line options

--load-type=LOAD_TYPE
--fail-fast             # sets failfast option in unit tests.

What’s new in Leo 5.4

Highlights

New Commands

  • The clone-find commands are a new way to use Leo.

  • The clone-find and tag-all-children commands unify clones and tags.

  • The pyflakes and flake8 make it possible to check files from within Leo.

Importers

  • Added importers for freemind, mindjet, json and coffeescript files.

  • Rewrote the javascript importer. It can optionally generate section references.

  • Imported files can optionally contain section references.

Plugins

  • Improved the mod_http plugin.

  • The viewrendered plugin supports @pyplot nodes.

All known bugs have been fixed.

Commands

Added these commands:

  • The extremely important clone-find commands:

    • clone-find-all (cfa)

    • clone-find-all-flattened (cfaf)

    • clone-find-all-flattened-marked (cffm)

    • clone-find-all-marked (cfam)

    • clone-find-parents

    • clone-find-tag (cft)

  • copy-marked

  • diff-marked-nodes

  • flake8

  • import-MORE-files

  • import-tabbed-files https://groups.google.com/forum/#!topic/leo-editor/qx0okNbjWUk

  • pyflakes

  • tag-children

The pylint and pyflakes commands now write to Leo’s log window, as well as the console.

Improved the clone-marked/copy-marked/move-marked commands.

Removed all static abbrev commands. Removed all chapter-* commands except the chapter-select and chapter-select-main commands.

Other features

  • Added installer for file associations.

  • Added File:Import submenu.

  • Leo now colorizes basestring, @staticmethod & @classmethod.

  • Added dialog when creating myLeoSettings.leo automatically.

  • Added support for auto-justified body text.

  • Added @button import-tab-files to scripts.leo: https://groups.google.com/forum/#!topic/leo-editor/YcT7SOSYEQk

  • @chapter trees need no longer be children of @chapters nodes.

  • Fixed bug in NSIS installer. The old code failed to find Python installations in the 64-bit Windows registry.

Settings

Added the following settings:

  • @bool check_for_changed_external_files

  • @bool open_with_save_on_update

  • @bool plain-key-outline-search

  • @bool run-pyflakes-on-write

  • @bool show-iconbar

  • @int autojustify

  • @int qweb_view_font_size

What’s new in Leo 5.3

Highlights

Leo 5.3-final released May 2, 2016.

  • Leo now supports Jupyter Notebook (.ipynb) files.

  • @chapter is now allowed anywhere. No need for @chapters.

  • Faster spell checking.

  • The rst3 command supports @rst-table.

  • The show-invisibles command now uses native Qt characters.

Commands

  • Added clean-at-clean-files and clean-at-clean-tree commands.

  • Added python-to-coffeescript command.

  • Better defaults for open/save file dialogs.

  • Improved clone-find commands.

  • Improved kill & yank commands.

Plugins

  • The livecode plugin is enabled by default, provided that the [meta] (https://pypi.python.org/pypi/meta) package is available.

  • The viewrendered3 plugin is intended to replace the VR1 and VR2 plugins.

What’s new in Leo 5.2

Highlights

Leo 5.2-final release March 18, 2016

Easy install with PyInstaller packaging
c.cloneFindByPredicate
clone-find-marked commands:
    cfam (clone-find-all-marked)
    cffm (clone-find-all-flattened-marked)
decorators create all Leo commands
find-def and find-var
help-for-keystroke
Optional line numbers in the left gutter
show-invisibles uses Qt characters
--ipyhon command-line option works with latest IPython versions
Themes
Wildcard file names on Leo's command line

Commands & directives

cfa, cff, cfam, cfam
clear-log
clone-to-at-spot
Ctrl-x & Ctrl-C cut/copy the entire line if no text is selected
find-all now writes to the body of a new top-level node
find-def and find-var
flatten-outline-to-node
goto-next-clone falls back to find-next-clone
help-for-keystroke
kill commands cut selected text
show-invisibles uses Qt characters
vim-open-file
@beautify and @nobeautify

Features

Abbreviations now support auto-close quotes
https://groups.google.com/d/msg/leo-editor/yJLz-p3I4mY/Pqa1phYN_10J
Ctrl-G resets status line
declutter node: substituting icons for @clean, @file, etc.
Find commands now show status
New menu: Settings: Edit Settings
https://groups.google.com/d/msg/leo-editor/pM8aVJ1D6ao/Z8lq43t7FAAJ
New menu: File:Print
Optional line numbers in the left gutter
Themes
Wildcard file names on Leo's command line

Plugins & scripts

leoOPML.py plugin

mod_http.py plugin can control Leo remotely
(https://groups.google.com/d/msg/leo-editor/wWWUgfDhPi4/VmRRRa_xDAAJ)

make_stub_files.py script creates stub (.pyi) files
https://github.com/edreamleo/make-stub-files

python_to_coffescript.py script converts .py files to .coffee files
https://github.com/edreamleo/python-to-coffeescript

Settings

@bool find-ignore-duplicates
@bool preload-find-pattern
@bool syntax-error-popup
@bool use_find_dialog
@bool use_gutter = True
@color find-found-bg = blue
@color find-found-fg = white
@color find-not-found-bg = red
@color find-not-found-fg = white
@color gutter-bg = @LightSteelBlue1
@color gutter-fg = black
    @data abbreviations-subst-env now allows Leo directives
@data history-list
    @data qt-gui-user-style-sheet
(https://github.com/leo-editor/leo-editor/issues/183)
    @ifenv
@ifplatform & @ifhostname (improved)
@int gutter-w-adjust = 12
@int gutter-y-adjust = 10
@language coffeescript
@string gutter-font-family = @font-family
@string gutter-font-size = @small-font-size
@string gutter-font-style = @font-style
@string gutter-font-weight = @font-weight

What’s new in Leo 5.1

Highlights

Leo 5.1 b2 released April 10, 2015.
@clean outlines create external files without sentinels.
Leo regularly checks the integrity of the outline.
Up/Down arrows in the minibuffer cycle though command history.
load-leo.html displays .leo files in the browser.
Leo now honors @language inside @doc parts.
@data nodes can now be composed from a tree of nodes.
    This feature appeared in Leo 5.0, but was not documented.
Added @int qt-cursor-width setting.
Added g.IdleTime & LeoQtGui.IdleTime.

Commands & settings

@bool make-node-conflicts-node
goto-global-line prefers to find a node *outside* any @<file> tree.
Added unformat-paragraph.

Features

Added nodes-dark icons & stylesheet.
(https://groups.google.com/d/msg/leo-editor/BrruEaWaX4Y/A0g4HQFvNtAJ)
Added --diff command-line option.
@auto persistence enabled if and only if an @persistence node exists.
@auto style parse on first @clean 'Refresh From Disk'
(https://github.com/leo-editor/leo-editor/issues/148)
Added LeoReleaseNotes.leo.
Improved messages when find commands fail.
Improved <?xml-stylesheet>.
Added g.getLanguageAtPosition. Should have been done long ago.

Why @clean is so important

@clean is a long-sought breakthrough. For the first time, Leo can be used in all situations without compromise. There is no longer any need to make excuses for sentinel lines, or argue whether people should accept them. Sentinels are simply gone.

The Mulder/Ream update algorithm

Leo updates @clean trees using a simplified version of the Mulder update algorithm previously used to update @shadow trees. This algorithm is easy to understand, provably correct and completely documented. It may be of interest to the developers of other outliners.

https://leo-editor.github.io/leo-editor/appendices.html#the-mulder-ream-update-algorithm

What’s new in Leo 5.0

Highlights

Leo 5.0 final released November 24, 2014

Better compatibility with vim, Emacs, pylint and PyQt:

    Optional native emulation of vim commands
    Full support for Emacs org-mode outlines
    Better support for pylint
    Support for both PyQt4 and PyQt5

Better handling of nodes containing large text:

    Idle time syntax coloring eliminates delay
    Optional delayed loading of large text

Power features:

    File name completion
    Cloned nodes expand and contract independently
    @data nodes can be composed from descendant nodes
    Leo's main style sheet can be customized with @color and @font settings
    @persistence nodes save data in @auto trees
    Leo now uses pluggable architecture for @auto nodes
    <Alt-X><tab> shows all commands
    Leo's beautify commands now uses PythonTidy by default

New plugins for tagging, display and node evaluation

Leo's default workbook files contains Leo's quickstart guide

Commands

Idle-time commands:

    disable-idle-time-events
    disable-idle-time-tracing
    enable-idle-time-events
    enable-idle-time-tracing
    toggle-idle-time-events
    toggle-idle-time-tracing

Spell as you type commands:

    spell-as-you-type-toggle
    spell-as-you-type-next
    spell-as-you-type-undo

Other commands:

    clone-find-parents
    clone-to-last-node
    flatten-outline-to-node
    focus-to-find
    focus-to-spell
    help-for-drag-and-drop
    insert-file-name
    pylint
    style-reload

Features

--no-persist and --trace-plugins command-line options
Optional warning buttons when selecting large text
Added support for delegate languages
Added support for the dart language
Added leo/external/leoftsindex.py
A plugable architecture for @auto nodes

The leo/plugins/importers folders now contains importer plugins.

The leo/plugins/writers folders now contain writer plugins.

Both importer and writer plugins can defined new kinds of @auto nodes.

Importers and writers can register either @auto-names or file extensions. For example, @auto x.xyzzy will use both the importer and the writer for the .xyzzy extension, that is, importers/test.py and writers/test.py. So, for unique extensions, there is no need to use a separate @auto name, you can just use @auto.

Plugins

Most plugins now work with PyQt5
Rewrote at_produce.py
Added livecode.py
Added nodetags.py
Added viewrendered2.py
Added wikiview.py

Settings

Added settings that control PythonTidy-based beautify command:

    @bool use_python_tidy = True
    @bool tidy_add_blank_lines_around_comments = True
    @bool tidy_double_quoted_strings = False
    @bool tidy_keep_blank_lines = True
    @bool tidy_left_adjust_docstrings = False
    @int  tidy_lines_before_split_lit = 2
    @int  tidy_seps_before_split_line = 8

Other settings:

    Added @bool auto-scroll-find-tab
    Added support for html handlebar syntax coloring
    Leo's main style sheet is fully parameterized
    Leo stylesheets now support all color names in leoColor.py

What’s new in Leo 4.x

What’s new in Leo 4.11

Highlights

Leo 4.11 final released November 6, 2013
Leo's tutorials have been rewritten and simplified
Greatly improved abbreviations, including templates
Clones are now valid anywhere in @file nodes
Leo now warns if a .leo file is open elsewhere
Leo's IPython bridge now works with IPython 1.x
Added support for @testsetup and @testclass
Added support for sessions
Added colorizing themes
A colored border highlights the pane with focus
Added support for the clojure, markdown and TypeScript languages
Added importers for .ipynb, .otl and vimoutliner files

Commands

go-anywhere (quicksearch plugin)
help-for-abbreviations
help-for-dynamic-abbreviations
help-for-find-commands
help-for-regular-expressions
insert-node-before
leoscreen-jump-to-error
normalize-whitespace
parse-body
print-buttons
vr-expand & vr-contract. All viewrendered commands now start with vr
zoom-in/out commands

Features

--no-plugins command-line option
@wrap now suppresses horizontal scrolling
Added importers for .otl, .ipnyb, TypeScript and vimoutliner
Added sublime Text 2, a dark colorizing theme
Added support for @testsetup and @testclass
Added syntax coloring for clojure language
Added yes-to-all button when prompting for dangerous writes
Allow periods before section names in headlines
Border color changes depending on input state
Clones are now valid anywhere in @file nodes
Fully supported `:`: convention in @mode nodes
Help commands now use <pre> formatting if docutils is not available
Leo issues a warning if the same .leo file is open in another Leo instance
Show all commands after <alt-x><tab>
Major additions to abbreviations, including templates

Plugins

leomylyn.py
markup_inline.py
printing.py
richtext.py
rss.py
screen_capture.py
screencast.py
timestamp.py

Scripts in scripts.leo

By Terry Brown:

    Add @script node
    Cross-outline node editing
    Export full contents
    Full tree view (See the discussion in the child)
    Indexing files for full text search
    Persistent state with json as a leo abbreviation
    Tool for diffing Leo files

By Edward K. Ream:

    Cleanup imported nodes
    Create global data structures from in modes/*.py files
    Get all comments from modes (slow)
    Import org mode
    Recursive import script

By Brian Theado:

    Display function call hierarchy in Leo

Settings

Added @color minibuffer-foreground-color
Added @color log_warning_color
Added @bool enable-tree-dragging

What’s new in Leo 4.10

Highlights

Leo 4.10 final released March 29, 2012
Detached windows
Major improvements to Leo's abbreviations

Commands

beautify-c
c-to-python
clone-find-all-flattened
clone-marked-nodes
delete-marked-nodes
move-marked-nodes
run-marked-unit-tests-externally
run-marked-unit-tests-locally
select-to-matching-bracket
split-defs

Classes

EditCommandsManager
KeyStroke & ShortcutInfo
LoadManager
TestManager

Features

Tab completion now shows all @command & @button nodes
Leo can highlight the pane containing the focus
The bigdash plugin searches across multiple files
The new quick edit/save mode makes Leo work like SciTe

What’s new in Leo 4.9

Highlights

Leo 4.9 final released June 21, 2011
The Qt gui completely replaces Tk gui
Nodes may contain multiple @language directives
Unified extract and import commands
Greatly improved the autocompleter
The rendering pane displays movies, html, svg images, etc.

Commands

Commands now have common prefixes:

    abbrev-     abbreviation commands
    apropos-    help
    buffer-     buffer command
    ddabrev-    dynamic abbreviations
    directory-  director commands
    file-       file commands
    find-       find commands
    gc-         garbage collection
    isearch-    incremental search
    print-      print information
    rectangle-  rectangle commands
    register    register commands
    run-        run unit tests
    toggle-     toggle settings
    yank-       yank

The import-file commands replaces all the following commands:

    import-at-file
    import-cweb-files
    import-derived-file
    import-flattened-outline
    import-noweb-files

Commands related to uA's:

    clear-all-uas
    clear-node-uas
    print-all-uas
    print-node-uas
    set-ua

Other commands:

    insert-hard-tab
    insert-soft-tab
    replace-current-character command
    save-all
    toggle-abbrev-mode
    toggle-case-region

Features

Added --no-splash, --script and --silent command-line options
Leo highlights URL's everywhere
Ctrl-clicking a URL's opens them in the browser
Leo uses an @file node's extension if there is no @language directive
Plain up/down arrow keys in headline-editing mode select a new node
Added namespace directive to .leo files
Added cython colorizing

What’s new in Leo 4.8

Highlights

Leo 4.8 final released November 26, 2010
New-style sentinels
Drag and drop
Improved abbreviations
Spell checking based on PyEnchant
Leo creates "Resurrected Nodes"

Commands

code-to-rst
cascade-windows
minimize-all-windows
head-to-prev-node
tail-to-next-node
extract-python-method

Features

Leo can open multiple files from the command line
Added an .ini importer
Added support for .nsi files
New screenshots plugin

What’s new in Leo 4.7

Highlights

Leo 4.7 final released February 23, 2010
The one-node world
Leo now works with Python 3 & requires Python 2.6+
'Recovered Nodes' nodes guard against clone conflicts

Command-line options

--debug
--version

Commands

clear-all-caches
clear-cache

What’s new in Leo 4.6

Highlights

Leo 4.6 final released July 15, 2009
Cached external files
Automatic syntax checking of .py files
The Qt gui is now the default
@auto-rst
Added p.b, p.h and p.gnx; v.b, v.h and v.gnx properties
Tab and Shift-Tab indent & unindent text

Commands

back-to-home
open-quickstart-leo
pdb

Features

New --config, --file and --gui command-line options
The open command creates @edit nodes when opening non-.leo files
Leo opens a workbook if no file is given
Predefined 'self' in @test/@suite nodes
Escapes for underindented lines
Improved Leo's unit testing framework
New warnings for dangerous writes to @auto and @file nodes
@nocolor-node directive
qtGui and tkGui plugins

What’s new in Leo 4.5

Highlights

Leo 4.5 final released September 2, 2008
@shadow
Improved Leo's key-binding code
Improved support for vim bindings
Allow v.uA's in @file and @shadow nodes
Sax-based parser for .leo files
Unified nodes
Reorganized Leo's drawing and focus code:
Removed calls to c.beginUpdate and c.endUpdate

What’s new in Leo 4.4.8

Highlights

Leo 4.4.8 final released April 6, 2008
Host Leo's sources on bzr
Began using Google groups
Translate arguments to g.es and g.es_print with gettext
Completed ILeo: a bridge between IPython and Leo
Common @commands nodes in settings files

What’s new in Leo 4.4.7

Highlights

Leo 4.4.7 final released February 18, 2008
The IPython bridge (ipython plugin)

What’s new in Leo 4.4.6

Highlights

Leo 4.4.6 final released January 26, 2008
Added @data nodes
Added @auto importers for javascript and xml files
Added find-next-clone and toggle-sparse-move commands

What’s new in Leo 4.4.5

Highlights

Leo 4.4.5 final released December 11, 2007
Leo now recognizes directives in headlines

Commands

delete-all-icons
delete-first-icon
delete-last-icon
delete-node-icons
insert-icon
reverse-sort-lines
reverse-sort-lines-ignoring-case
sort-lines-ignoring-case
toggle-collapse_nodes_during_finds

Features

Created unitTest.leo
The rst3 plugin now supports @rst-preformat nodes

What’s new in Leo 4.4.4

Highlights

Leo 4.4.4 Final released November 2, 2007
The Great Graph Aha.  See the History of Leo
@auto
@menus trees
@buttons trees
A faster colorizer plugin

Commands

check-derived-file
check-leo-file
compare-leo-outlines
insert-child
read-at-auto-nodes
read-file-into-node
write-at-auto-nodes
write-dirty-at-auto-nodes
write-file-from-node

Features

@buttons trees
@menus trees
Added 'clear-all-marks' hook
Added graphed.py plugin

What’s new in Leo 4.4.3

Highlights

Leo 4.4.3 final released June 26, 2006
The **big reorg** removed all gui-dependent code from Leo's core
Added chapters
Added zipped .leo files
Added leoBridge module
Better support for the winpdb debugger
Added @enabled-plugins and @openwith nodes
Added __wx_gui.py

What’s new in Leo 4.4.2

Highlights

Leo 4.4.2.1 final released October 29, 2006
The 'big reorg': vnode and tnode classes are independent of Leo's core
Support for ZODB in the vnode and tnode classes
The find command closes nodes behind it

Commands

extend-to-line
extend-to-paragraph
extend-to-sentence
forward-end-word
forward-end-word-extend-selection

Features

Leo can be called from Emacs: See the `Leo and Emacs` chapter
Added support for middle-button paste
Writing .leo files is about twice as fast as before
Integrated sax with read logic
Much faster navigation through the outline using Alt-arrow keys
When focus is in the outline pane, you can move to headlines by
typing the first letter of headlines
The find command now closes nodes
Leo is easier to use without using a mouse

Plugins

Improved mod_scripting.py:

    Creates a command for every button
    The Script Button button creates the press-script-button-button command

New plugins:

    leo_to_html.py
    leo_to_rtf.py
    paste_as_headlines.py
    slideshow.py
    word_count.py

Settings

@bool collapse_nodes_during_finds
@bool insert_new_nodes_at_end
@bool sparse_move_outline_left

What’s new in Leo 4.4.1

Highlights

Leo 4.4.1 final released August 30, 2006
Multiple editors in Leo's body pane
A new colorizer plugin controlled by jEdit language description files
Search commands now support regex replace patterns
Support for external debuggers: https://leo-editor.github.io/leo-editor/debuggers.html

Commands

cycle-focus
debug
find-character
find-word
help-for-command
hide-invisibles
isearch-with-present-options
open-users-guide
python-help
run-unit-test
scroll-outline-left
scroll-outline-right
toggle-autocompleter
toggle-calltips
toggle-invisibles

Features

Leo matching brackets
\1, \2, etc. replacements are valid in regex searches
\n and \t are valid in plain searches
The shortcut for the replace-string command changes
from the find command to the replace command

Plugins

Added slideshow.py
mod_scripting.py creates a press-x-button commands

Settings

@abbrev settings
@font settings
Commands can be executed on entry to a mode
Bindings that are active only in command, enter and insert key states

New Settings:

    @bool autoindent_in_nocolor_mode
    @bool flash_matching_brackets
    @bool idle_redraw
    @bool trace_bind_key_exceptions
    @bool warn_about_redefined_shortcuts
    @color flash_brackets_background_color
    @color flash_brackets_foreground_color
    @int flash-brackets-delay
    @int flash_brackets_count
    @string close_flash_brackets
    @string open_flash_brackets
    @string editor_orientation

What’s new in Leo 4.4

Highlights

4.4 final released May 11, 2006
An Emacs-like mini-buffer
Many new commands
You can use Leo without using a mouse
Flexible key bindings and input modes
A tabbed log pane
Autocompletion and calltips

Commands

activate-cmds-menu
activate-edit-menu
activate-file-menu
activate-help-menu
activate-outline-menu
activate-plugins-menu
activate-window-menu
add-space-to-lines
add-tab-to-lines
clean-lines
clear-selected-text
click-click-box
click-headline
click-icon-box
clone-find-all
contract-and-go-right
contract-body-pane
contract-log-pane
contract-outline-pane
contract-pane
double-click-headline
double-click-icon-box
dump-all-objects
dump-new-objects
expand-body-pane
expand-log-pane
expand-outline-pane
expand-pane
find-again
find-all
find-tab-find command
find-tab-find-previous
free-text-widgets
fully-expand-body-pane
fully-expand-log-pane
fully-expand-outline-pane
fully-expand-pane
goto-first-sibling
goto-global-line
goto-last-sibling
help
help-for-command
hide-body-pane
hide-find-tab
hide-log-pane
hide-minibuffer
hide-outline-pane
hide-pane,
open-find-tab
open-find-tab
open-outline-by-name (uses filename completion)
open-spell-tab
print-bindings
print-commands    re-search-backward
re-search-forward
remove-space-from-lines
remove-tab-from-lines
replace-string
run-unit-test
scroll-down
scroll-down-extend-selection
scroll-outline-down-line
scroll-outline-down-page
scroll-outline-up-line
scroll-outline-up-page
scroll-up
scroll-up-extend-selection
search-backward
search-forward
search-with-present-options
set-find-everywhere
set-find-node-only
set-find-suboutline-only
show-colors
show-fonts
show-minibuffer
show-search-options
simulate-begin-drag
simulate-end-drag
toggle-find-ignore-case-option
toggle-find-in-body-option,
toggle-find-in-headline-option
toggle-find-mark-changes-option
toggle-find-mark-finds-option
toggle-find-regex-option
toggle-find-reverse-option
toggle-find-word-option and
toggle-find-wrap-around-option
toggle-mini-buffer
verbose-dump-objects
word-search-backward
word-search-forward

Features

Added script to update new copies of leoSetttings.leo from previous copies
Made all edit command undoable
Added colorizing support for Lua language
Autocompletion and calltips
Leo remembers the previous open directory
User input modes
Installed many standard bindings to leoSettings.leo
Added support for @mode nodes
Added modes/\*.xml to distribution
Allow multiple key bindings to the same command
Moved all scripts into scripts.leo
Bound <Return> to end-edit-headline
Created scripts.leo and unitTest.leo
The tabbed log
The Find tab replaces the old Find panel

Plugins

Changed path to stylesheet in the rst3 plugin
Fixed crasher in Word (and other) plugins
Fixed problem with labels plugin

Added the following commands for the groupoperations plugin:

    group-operations-clear-marked
    group-operations-mark-for-copy
    group-operations-mark-for-move
    group-operations-mark-for-clone
    group-operations-mark-target
    group-operations-operate-on-marked
    group-operations-transfer

The scripting plugin now supports shortcuts in @button nodes:

    @button name @key=shortcut

The scripting plugin now supports @command nodes:

    @command name @key=shortcut

Settings

New settings features:

    Per-pane bindings: command-name ! pane = shortcut
    Spelling settings replace the settings in spellpyx.ini
        @shortcuts nodes

New settings:

    @bool allow_idle_time_hook
    @bool autocomplete-brackets
    @bool gc_before_redraw
    @bool minibufferSearchesShowFindTab
    @bool show_only_find_tab_options
    @bool show_tree_stats
    @bool trace_autocompleter
    @bool trace_bindings
    @bool trace_doCommand
    @bool trace_f.set_focus
    @bool trace_focus
    @bool trace_g.app.gui.set_focus
    @bool trace_gc
    @bool trace_gc_calls
    @bool trace_gc_verbose
    @bool trace_key_event
    @bool trace_masterClickHandler
    @bool trace_masterCommand
    @bool trace_masterFocusHandler
    @bool trace_masterKeyHandler
    @bool trace_minibuffer
    @bool trace_modes
    @bool trace_redraw_now
    @bool trace_select
    @bool trace_status_line
    @bool trace_tree
    @bool trace_tree_alloc
    @bool trace_tree_edit
    @bool useCmdMenu
    @bool useMinibuffer
    @bool use_syntax_coloring
    @color body_text_selection_background_color
    @color body_text_selection_foreground_color
    @color log_pane_Find_tab_background_color
    @color log_pane_Spell_tab_background_color, etc.
    @int max_undo_stack_size,
    @string trace_bindings_filter
    @string trace_bindings_pane_filter