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Komodo 3.5 Documentation


Revision History

This document chronicles feature additions, product enhancements and bug fixes in previous versions of Komodo, beginning with the version that preceded the current version.

Komodo 3.5.3 (April, 2006)

  • Fixed some xpcom registration issues on startup
  • Some minor unicode issues on non-English systems fixed

Komodo 3.5.3 Beta 1 (March, 2006)

  • [Mac OS X] Now have a build of Komodo for Mac OS X on Intel.
  • [Solaris] Once again have a Komodo for Solaris build.
  • Numerous locale and encoding bugs have been fixed.
  • Numerous keybinding bugs have been fixed.
  • Minor FTP-support improvements to speed up browsing in the "Open Remote File" dialog.
  • Improvements in the Diff Windows to properly support context, unified and plain diff styles.
  • A full list of bug fixes can be obtained on http://bugs.ActiveState.com/, for your convenience, use http://tinyurl.com/pvasm.

Komodo 3.5.2 (December 6, 2005)

  • [Windows] Fix AltGr+<number> keybindings for international keyboard layouts on Windows. See bug 43021 for details. One side effect of this fix is that the keyboard shortcut for "View Line Numbers" had to be changed from Ctrl+Shift+6 to Ctrl+Shift+4.
  • [Windows] Fix XSLT autocomplete (bug 41898).
  • Perl syntax checking default setting change to not use taint mode. See this komodo-discuss thread for details.
  • [Windows] Fix setting of Windows File associations (bug 42107). Due to the nature of the bug it may be necessary to first remove all your file associations in the Windows Integration panel, press "Re-apply settings to system", then reset all your file associations before they will be setup properly.
  • [Linux] Fix SELinux issues that would prevent Komodo from starting on Linux machines with SELinux kernel extensions installed and enforcing -- the default on Fedora Core 4. (Bug 43260)
  • Various bug fixes.

Komodo 3.5.1 (November, 2005)

  • Added a Ruby Interactive Shell.
  • Various bug fixes, especially for Ruby support, IME, and Mac OS X keybinding issues.

Komodo 3.5 (November 2, 2005)

  • Komodo has been ported to Mac OS X
  • Ruby support has been added, including debugging, code intelligence (including Code Browser support, Object Browser support, AutoComplete and CallTips), syntax checking, syntax highlighting, and code folding.
  • Komodo's Mozilla source base has been upgraded to the 1.8 tree (same as Firefox 1.5).
  • The embedded Python has been updated to version 2.4.
  • Multilingual Input Method Editor (IME) support.

Komodo 3.1 (February, 2005)

Key Features

  • Subversion support has been added to the Source Code Control system. Support for Subversion is limited to the same features and capabilities available for CVS and Perforce. For more information, see Source Code Control
  • Perl AutoComplete and CallTips support is available in this release. See AutoComplete and CallTips for more information.
  • The Python debugger has been rewritten into a regular Python package, and now includes an extension written in C to provide performance boosts for large applications, or applications using various GUI toolsets (eg. wxPython).
  • PDK 6 support is now built into the distribution and does not require a separate step to enable.


  • Syntax coloring for many new languages, including APDL, Asn1, AutoIt, Asm, Avenue, Bash, CLW, EScript, Erlang, Forth, Gui4Cli, Kix, Lout, Metapost, MMIXAL, Lot, MSSQL, Nsis, PowerBasic, PostScript, POV-Ray, Scriptol, Specman, TeX, Verilog, and YAML.
  • Unicode and locale support has been enhanced.
  • Performance of the UI components has been improved.
  • Markers that show line wrapping when the editor is in wrap mode
  • Better column select support. Use 'Shift'+'Alt'+ arrow keys for selection.
  • TrueType fonts are available on Linux.
  • Anti-aliased fonts are available on Linux.
  • Support for copying, pasting as well as dragging and dropping has been improved on Linux.

Komodo 3.1 Beta 2 (January, 2005)

This release includes the following bug fixes:

  • Win9x startup and runtime problems in Beta 1 (bugs 34939, 36202, 36207, 36208)
  • WinNT startup problems in Beta 1 (bug 36211)
  • AutoComplete: Inherited methods of HTTP::Request not suggested (bug 35769)
  • AutoComplete: perlcile gets stuck scanning WWW::Mechanize (bug 35788)
  • AutoComplete: PHP AutoComplete for parent:: includes class members for the current class (bug 36104)
  • AutoComplete: Code intelligence doesn't supply methods for an instance of an object. (bug 36128)
  • Code Browser: "Go to Definition" error with code folding (bug 33495)
  • Code Browser: Perl file is shown twice in the Code Browser (bug 33665)
  • Debugger: Remote Python debugging hangs on non-existent file (bug 36247)
  • Debugger: Last line not recognized in remote dbg (bug 36265)
  • Documentation: Wording change to Perl remote debugging setup docs (bug 33067)
  • Documentation: K3.1 Solaris may require OS patches (for Mozilla) (bug 35873)
  • Documentation: Fixes to Tutorial docs (bugs 36073, 36077, 36080)
  • Editor: "updateBreakpointsFromMarkers" traceback during save (bug 33150)
  • Editor: Komodo does not notice that mailexport.xml has changed (bug 36078)
  • Macros: Some macro triggers don't work (bug 36084)
  • Object Browser: HTTP::Date.time2str looks odd (bug 35786)
  • Source Code Control: Offer to save file on SCC diff when the file is dirty (bug 36067)

To view the complete list of bugs fixed in this release, see http://bugs.activestate.com.

Komodo 3.1 Beta 1 (January, 2005)

This release includes the following bug fixes:

  • Solaris builds available
  • Subversion documentation added
  • Further performance improvements in Python debugger
  • Perl Code Intelligence improvements
  • Perl .xs file extension mapped to C++ lexer
  • * Perl .PL file extension mapped to Perl lexer
  • Fixes to Watch variables tab (bug 35808)
  • Duplicate variable names in PHP completion fixed (bug 34795)
  • Advanced debugger preferences added for customizing amount of data returned from debug sessions for variable viewers
  • Previously, projects could not import/open files with colon in the filename (bug 35783)
  • Permission denied on one item in import prevented importing any files/dirs (bug 30188)
  • Support extends and implements for AutoComplete in PHP ( bug 35881)
  • Fixed PHP completion for remote files (bug 34745)
  • Support self keyword for PHP completion (bug 35042)
  • Python -E caused debugging/shell to fail (bug 35114)
  • Source Code Control add/delete status in projects was broken (bug 35919)
  • Source Code Control edit command was available when it shouldn't have been (bug 35927)
  • Source Code Control folder/container commands were not available (bug 35925)
  • Fixed using locally installed PyDBGP

To view the complete list of bugs fixed in this release, see http://bugs.activestate.com.

Komodo 3.1 Alpha 4 (December, 2004)

This release includes the following bug fixes:

Bug Fixes and Enhancements

  • Editor: Column select key bindings now 'Alt'+'Shift' rather than 'Ctrl'+'Alt'+'Shift'
  • Debugger: No tooltips/hints for variables when debugging Perl script (32875)
  • Debugger: Only 100 children of an array shown in debugger variable panes (33702)
  • Python: Extreme slowness debugging large python applications (33140, see new features above)
  • Python: wxPython crashes resolved (33112, see new features above)
  • Python: Stepping into execfile within a method fails (34767)
  • Python: Eval fails to debug (32657)
  • Python: Can't set breakpoints in Python threads (34803)
  • Python: Debugger fails to display Python sets ( 34796)
  • Python: Interactive shell hangs
  • Perl: Log file path does not expand tilde (34711)
  • Perl: Debugger stops execution in extraneous .pm files (34699)
  • Perl: Various remote debugger issues fixed
  • Perl: NEW break support added
  • Perl: $1 not preserved in Perl interactive shell session (34528)
  • Perl: Single-quoted multi-line string failure (34967)
  • PHP: Incorrect line numbers used in code browsing (32499)
  • PHP: Completion of functions from include files is faulty (34865)
  • PHP: Preferences report debugging is not configured (34703)
  • PHP: Updated xdebug extension
  • TCL: Support for debugging incrtcl code
  • default extensions for new languages (34708)
  • Incorrect tooltip in search toolbar (33347)
  • Using tab key to indent deletes characters (34695)
  • Komodo version does not show in name in Add/Remove Programs (34797)
  • 'View as language', display does not update syntax coloring (34689)
  • Perl: Syntax color issues (34087)
  • Completion drop-down is clipped by scintilla window (34392)
  • dragging/dropping multiple files fails to work (34891)
  • Rectangle (column) selection failed on windows (34042)
  • Print selection with tabs prints incorrect selection (34739)
  • Better cvs version parsing (35428)

Komodo 3.1 Alpha 3 (November, 2004)

This release includes the following bug fixes:

Bug Fixes

  • fixed startup bug on Linux when using NFS mounts for home directories (34041)
  • MOZ_PLUGIN_PATH would cause Komodo startup failure (34779)
  • wxPython crash when debugging (33112)
  • Perl debugger uri fix (34714)

Komodo 3.1 Alpha 2 (October, 2004)

This release includes the following bug fixes:

Bug Fixes

  • fixed startup bug on Windows
  • Perl Interactive Shell: a few refinements relating to handling of special variables ($1 .. $9, $`, $', @_)
  • Perl debugger: perl debugger fails if logfile setting has spaces in the path (bug 34192)
  • Unix install script: fix expansion of "~" directories
  • VPM: fix startup failure

Komodo 3.1 Alpha 1 (October, 2004)

This release includes the following bug fixes:

Bug Fixes

  • Overload support for the Perl debugger (33367)
  • Fixed CVS support for less used protocols or protocols available with CVSNT
  • Minor fixes in Perforce support (33683)
  • "Find" functionality improvements (33698)
  • Debugger's HTML view now handles images properly (33619)
  • Cyrillic (and other) keyboard support fixed (34028)
  • Perl syntax coloring improvements (34087
  • General debugger improvements (32645)
  • Debugging of Tcl incrtcl classes now possible (34090)
  • Breakpoint failures addressed for Tcl debugging (34079)
  • File|Revert command was previously never available (33335)
  • "Repeat next" key binding ('Ctrl'+'K', 'Ctrl'+'U') now stops repeating when it should (33960)
  • On Linux, dragging and dropping a file onto an open file in the Editor Pane caused the name of the added file to be pasted into the already-open file (32341)
  • Deleting a single custom menu from the Toolbox removed all custom menus from the main menu (33202)
  • Comparing files with different line endings caused Komodo to hang (32932)
  • Breakpoints in remote files were ignored (33636)
  • The Python remote debugger failed when debugging local files (33079)
  • Perl Debugger - fixed "Bizarre copy of ARRAY"
  • Opening files with 'Enter' key had unintended side effects (33433)
  • Non-ASCII Characters were not displayed properly in the RX Toolkit (33054)
  • Remote debugger always searched for local files (33116)
  • Breakpoints didn't work for filenames with parentheses when debugging Perl (33968)
  • Temporary files were created and not removed when debugging Perl (34308)
  • Module dependencies are now handled better during Perl debugging (33771, 33255)
  • Breakpoints are now reset after saving a file for Perl debugging (34267)

To view the complete list of bugs fixed in this release, see http://bugs.activestate.com.

Komodo 3.0.1 (August, 2004)

  • On Windows, CPU usage spiked to 100% from the debugger proxy at end of a debug session.
  • Custom menus disappeared when dragging macros into them.
  • The "Your Toolbox has changed outside Komodo" alert was being displayed unnecessarily.
  • Komodo was unable to "Save As" files in 8bit encodings on Linux platforms.
  • Files could not be opened while using ShiftJIS or cp936 system default encodings.
  • The debugger was hanging with a Prototype Error when debugging Perl on Linux.
  • Usage of the "System defined default browser" was incorrect in some cases.
  • CVS integration did not work with some versions of CVS.
  • The code intelligence scanning engine hung on certain file access errors.
  • Some failures with non-ascii characters in filenames on Linux (such as the inability to use CVS or failures in the auto-save feature) were fixed.
  • Some failures when converting document encodings were fixed.

To view the complete list of bugs fixed in this release, see http://bugs.activestate.com.

Komodo 3.0 (July, 2004)

Code Intelligence

Komodo's Code Intelligence system is a set of tools that supports multiple languages. The Code Intelligence tools include the Code Browser, Object Browser and Python AutoComplete and CallTips. All Code Intelligence tools require a Code Intelligence database to operate fully.

The Object Browser is a graphical browser that searches the Code Intelligence database for specified code symbols and modules. Use the Object Browser's preview pane to view code snippets containing the search criteria.

The Code Browser displays on the Code tab next to the Projects tab in the Left Pane. The Code Browser displays a hierarchical tree view of all code constructs (for example, variables, methods, imports) in all open files. For Python, instance attributes are all displayed. The code tree, which can be navigated using either the keyboard or mouse, includes the following features:

  • Double-click a node to jump to that point in the code.
  • When the cursor is positioned in the Editor Pane, clicking the Locate current scope button on the Code Toolbar or pressing 'Ctrl'+'K', 'Ctrl'+'L' causes Komodo to jump to the node in the code tree that most closely matches the current point in the program. Additionally, a Scope Indicator, located in the status bar, displays the current scope of a selected code construct. Double-click the Scope Indicator to open the tree hierarchy to the code construct.
  • When the focus is in the Code Browser tree, pressing the 'Tab' key causes Komodo to shift to the Filter text box. Typing any string in this text box causes the Code Browser to display all of the nodes matching that string. Pressing 'Tab' again shifts the focus back to the tree. Clearing the Filter text box returns the tree to its original state. Note that all matching nodes are shown, even those that are invisible because their parents were not "expanded".
  • The Sort menu on the Code Toolbar lets you toggle whether the nodes at each level of the tree are sorted in alphabetical order or according to the order they occur in the file.
  • The Code Description pane, located in the lower part of the Code Browser, displays additional documentation (when available) on various program components.

Python AutoComplete and CallTips are enhanced with the Code Intelligence database.

Interactive Shell

The interactive shell is an implementation of Perl, Python and Tcl's interactive shell within Komodo. The interactive shell supports, AutoComplete, CallTips, debugging functions, customization and history recall.


  • A debugger proxy is available that enables multiple users to debug with Komodo on the same machine.
  • The Breakpoints tab in the Bottom Pane of the Komodo workspace is designed for convenient management of breakpoints and Tcl spawnpoints. This tab displays enabled and disabled breakpoints and spawnpoints. Double-clicking an enabled or disabled breakpoint on the Breakpoints tab opens the related file in the Editor Pane and shifts focus to the line in the program associated with that breakpoint.
  • Komodo now handles multi-session debugging. Komodo can debug multiple programs, regardless of the supported languages used in the applications being concurrently debugged.
  • The Bottom Pane of the Komodo workspace (previously the Output Pane) has been reorganized and enhanced. The new Debug tab is displayed whenever a Komodo debugging session is launched.
  • A Debug Toolbar is available on the Debug tab in the Bottom Pane of the Komodo workspace. It includes additional controls for detaching from a new debugging session and forcing a break.
  • New remote debugging features include the ability to listen for remote debugger sessions continuously, set remote debugger preferences, and check the listener status of the current configuration.
  • The new debugger properties dialog box supports multiple 'configurations' to be saved per file.
  • The new Debugger dialog box (displayed when a debug session is invoked) supports configurable interpreter arguments.
  • The Disable Output Buffering and Enable Implicit Flush options for PHP debugging have no effect when Simulate CGI Environment is selected. To disable output buffering in CGI emulation mode, manually comment out the output_buffering setting in php.ini with a ";" character, or set it to "off".

Rx Toolkit

The Rx Toolkit has been completely overhauled. New features include:

  • Match Type buttons that set the match mode for the regular expression. The buttons represent functions that let you Match, Match All, Split, Replace and Replace All.
  • For Python regular expressions, there are two new modifiers: Unicode and Locale.

Multi-User Features

  • A Shared Toolbox with functionality similar to the standard Toolbox makes it possible for multiple users to share items such as run commands and code snippets. The Shared Toolbox is enabled via a check box on the Shared Support page of Komodo Preferences.
  • Users can accept a default Common Data Directory or specify a custom location via the new Shared Support page in Komodo Preferences.
  • Multiple users can share .tip, .pcx and .pdx files and preferences.

Enhanced Search Functionality

  • The new Open/Find Toolbar makes it easier to open files and search for strings in currently open files.
  • A Find in Files dialog box is used to search for files that are not currently open.

Macro Enhancements

  • A Macro Toolbar provides a quick and easy way to record, pause, play, stop and save macros.
  • Macros are no longer stored as separate files (as they were in 2.x). Because macro content is now included in a macro item, it is easier to share macros between multiple users.
  • The Properties dialog box for macros contains a window in which macros can be coded in either JavaScript or Python.
  • Triggers can be set so that macros execute as a result of specific Komodo events.
  • The documentation includes a macro API.

Custom Toolbars, Menus and Icons

Create Custom Toolbars and Menus for frequently used components. Custom Toolbars are displayed beneath the existing toolbars; custom menus are added to Komodo's top-level menu, between the Tools and Windows menus. Custom icons can be assigned to components like run commands, snippets, etc.

Editing Enhancements


  • PHP 5 is supported.
  • Support for Web services has been deprecated. Note that this will not prevent the use of Web services in applications developed in Komodo.
  • Users familiar with the Emacs editor can configure Komodo to use Emacs key bindings and set a File Associations preference so that Komodo checks for an embedded Emacs mode specification.
  • Support for Tcl has been improved to include more detailed logging and additional syntax checking options.
  • Two new interpolation shortcuts (%L and %P) can now be used in the Run Command dialog box.
  • Users now have the option to assign custom icons to Komodo components (snippets, run commands, etc).
  • Printing features for specifying line wrapping and font scaling have been added to the Printing page in Komodo Preferences. This page is now also accessible by clicking Print Settings on the File menu.
  • Components from Projects or the Toolbox can be exported to a self-contained archive for distribution to other users. The import and export wizards are invoked via the right-click context menu in the Project or Toolbox tab, or from the Toolbox menu.
  • Perl, Python and Tcl preferences include the ability to specify import directories.
  • On the Editor|Key Bindings preference page, the key bindings list can be filtered.


  • The new Feature Showcases are quick demos of Komodo features.
  • Komodo Help now displays in a selected web browser.
  • Improved search capabilities, including phrase search and result ranking, make it easier to locate specific information.
  • The documentation includes an index.
  • Context-sensitive Help buttons have been added throughout the Komodo workspace.
  • The documentation includes a macro API.

Komodo 3.0 Beta 4 (June, 2004)

Komodo 3.0 Beta 3 (May, 2004)

Komodo 3.0 Beta 2 (May, 2004)

Komodo 3.0 Beta 1 (May, 2004)

Komodo 2.5.2 (January, 2004)

This release contains bug fixes for Komodo 2.5 and 2.5.1, including:

  • Intermittent crashes were occurring on Linux, caused by the autosave feature.
  • On Linux, the Internationalization dialog in Komodo's Preferences was generating an error.
  • Perl's Visual Package Manager was not always reporting a startup failure to the user.
  • AutoComplete for Perl and Python did not work.
  • Intermittently, the variable type indicator (i.e., $, @, %) was not being selected when double-clicking on a variable in the editor pane.
  • Umlaut characters were causing file contents to be lost on save.
  • CVS source code control integration functions were not available on directories or projects.
  • The Tcl statement source file was not finding the specified file.
  • There were errors in Tcl syntax checking.
  • CVS source code control integration was generating errors on Solaris.
  • There were debugging errors when working with Tcl scripts on Solaris.
  • When adding template items to a project or the Komodo Toolbox, it was not possible to cancel the file selection operation.
  • The CVS source code control integration now supports use of a local repository.
  • The update function in Komodo's source code control integration was not functioning under certain circumstances.
  • On Solaris, it was not possible to create a file on an NFS-mounted disk.
  • Regardless of the setting for line endings, new files were created with DOS/Windows line terminators.
  • Perl brace matching could cause Komodo to lock up under certain circumstances.
  • XML AutoComplete could cause Komodo to lock up.
  • During a workspace restoration, if multiple files contained breakpoints, the breakpoints were not being written to Komodo's breakpoint manager and would have to be manually re-set.
  • After debugging, debugger arrows were still active on files that had been stepped into.
  • Files names that included spaces could not be added to projects.
  • Under certain circumstances, Komodo would not start on Red Hat version 8.
  • Autosave functionality is now more robust.
  • Under certain circumstances, opening files resulted in a blank page in the editor pane.
  • On Linux, the debug session would occasionally hang due to problems with the remote debug listener.

Komodo 2.5.1 (October, 2003)

This release contained bug fixes for Komodo 2.5. The only user-visible changes were:

  • When clickable links are displayed in the Output Pane, you must double-click (rather than single click) to follow the link. This allows for portions of the link to be selected via single-clicks. The link is no longer underlined.
  • The default Perl remote debugging port has changed from 9010 to 9011 (due to a conflict with the XIM server on UNIX). To use the new port, alter the PERLDB_OPTS setting on the remote machine. If you are invoking the Komodo debugger via the Perl Dev Kit's -debug switch, ensure that the specified port number matches the Komodo's port number.
  • The menu link for the Start Page has been moved from the Help menu to the Windows menu.
  • The Close All menu option no longer closes the Start Page.
  • The Internationalization preference page for language encodings has changed. Programming-language specific encodings are now used for existing files, as well as new files.

The following major bugs were fixed:

  • The highlighting of selected text was not released if the mouse pointer moved outside of the editor pane.
  • Komodo Personal failed to start up properly if the Show Button Text option was enabled.
  • Background syntax checking would cease to function.
  • Saving of remote files failed for long editing sessions.
  • Remote debugging didn't honor Perl breakpoints.
  • The Rx window could hang.
  • Hotspots in the Output pane were generated for spurious lines and the dialog was hard to dismiss.
  • Installing web services for Perl 5.8 is fixed.
  • The Build Standalone Perl Application dialog didn't deal well with scripts with UNC filenames (\\machine\drive\...).
  • Printing collapsed whitespace in the middle of lines.
  • The ability to show diffs in an editor tab wasn't working.

Komodo 2.5 for Windows, Linux (September, 2003)


  • Komodo's speed has been boosted through re-engineering, resulting in quicker times for startup, tab-switching, loading of dialogs, as well as overall performance gains.
  • Menus have been re-organized, and new items have been added. Every Komodo feature can now be accessed through the top-level menus.
  • The Preferences pages and a number of existing dialogs have been improved and reorganized for ease-of-use. Changed dialogs include those associated with current file settings, templates, source code control, remote files, and the Perl Dev Kit.
  • Templates can now use the same interpolation shortcuts as commands and snippets. Prior to Komodo Version 2.5, a set of variables could be used to embed the current date and time in files created from custom templates. The old codes have been deprecated and will be removed in the next Komodo release.
  • The Show Unsaved Changes command, previously exclusive to the Editor context menu, has been added to the File menu.
  • A new Compare Files feature on the Tools menu provides a quick and easy way to locate and "diff" two files.
  • A Word Wrap command has been added to the View menu.
  • A Tcl tutorial has been added to Komodo's set of language tutorials. Another new tutorial, the Komodo Tour, provides an introduction to the program's key features.
  • ASPN Cookbook integration is no longer supported.


  • Changes have been made to make more efficient use of the Komodo workspace:
    • A Full Screen command has been added to the View menu.
    • The Toolbox and Project Manager, which previously appeared in separate panes, are now contained in single pane. You can select Projects/Toolbox Pane from the View menu to show or hide this pane.
    • Toolbar button text is not displayed by default. Hiding the button text makes it possible for the toolbars to share a single row.
  • The functionality of Komodo's ancillary windows has been enhanced. The Debug Output, Command Output, and SCC Output tabs in the Output Pane offer context menus with access to a subset of the top-level View menu. There are key bindings for each of the context menu items. The same context menu is available in the "diff" window, which is invoked by either the Show Unsaved Changes command or the Compare Files command. The ancillary windows also support "hot-spotting". If Komodo detects a file reference, it will create a hot spot that links to the file itself.
  • Interpreter errors displayed in the Output Pane are now hyperlinks to the relevant line.
  • 'Ctrl'+'Tab' functionality is now supported in all of the panes in the Komodo workspace. Earlier versions of Komodo supported tab-switching in the Editor Pane only.
  • The Output tab and the Variables tab are now known as the Debug Output tab and Debug Variables tab, respectively.
  • The "grippies" used to show and hide the panes in the Komodo workspace have been abandoned in favor of "x" close buttons.

Project Manager and Toolbox

  • The new Toolbox menu provides functionality for importing and exporting items, along with other commands that were previously exclusive to the Toolbox context menu. The Projects/Toolbox Pane contains the Projects tab and the Toolbox tab. You can show or hide the Projects and Toolbox tabs by pressing 'Ctrl'+'Shift'+'P' and 'Ctrl'+'Shift'+'T', respectively.


  • Additions to the Window menu offer new display options for the Editor Pane. Selecting Split View divides the Editor Pane in two, so that you can preview files (e.g., HTML or XML) or compare two files. Select Rotate Tab Groups to toggle vertical and horizontal variations of the split view.
  • The View As Language item on the View menu now has a submenu item called Reset to best guess. Select this item to ignore the user preference, and analyze the file in an attempt to determine its language.
  • Change the language of an open file by right-clicking the name of the language on the status bar and selecting a language from the pop-up menu.
  • A new Smart Editing preference gives you the choice of configuring the 'Tab' key instead of 'Ctrl'+'Space' to trigger Komodo's word-completion feature.
  • The Go To Line dialog box now supports entries that are relative to the current line. For example, instead of entering a specific line number, you can enter "+10" or "-10" to move ten lines forward or back.
  • There are some changes to the default key bindings. For a complete listing of default key bindings, select Help|List Key Bindings.
  • The Ignore Hidden Text option has been removed from the Find dialog box.
  • Komodo now supports editing with non-English characters, based on the locale specified in the regional settings for Windows. See Customizing International Encodings for more information.

Web and Browser

  • A Preview in Browser command is now available through the View menu and the main toolbar. Depending on how the Web and Browser preferences are configured, this command will display a preview in one of three ways:
    • in the Editor Pane
    • side-by-side with the source code in a split view of the Editor Pane
    • in a separate window

GUI Builder

  • GUI Builder functionality has been extended to include language-specific widget palettes that are displayed according to the initial language selection. In addition, a greater variety of widgets is available.
  • The new Dialog tab displays an interactive organizational map that makes it easier to plan and manage the structure of dialogs.
  • The new Menu tab is used to create drop-down menus. The Menu tab features an additional widget set used to create standard menu commands, as well as commands with check box or radiobutton behavior.


  • The new Page Setup options used to set orientation, margins, and headers and footers can now be accessed from the File menu.
  • A new Print Preview command has also been added to the File menu. In addition to navigation buttons for viewing multi-page print jobs, the preview window offers access to Page Setup options. As a result, printing preferences available in Komodo 2.3, including Print Line Wrap Markers, Characters per line and Font Size Adjustment, have been removed.
  • Selecting the Print to HTML command now opens the generated file.

Fonts and Colors

  • The Fonts and Colors preferences have been streamlined to make managing these settings easier. You can create new font and color schemes based on the default scheme. In addition to Language-Specific Coloring, you can now set Common Syntax Coloring to specify the settings for elements used in multiple languages.


  • A Run Without Debugging item has been added to the Debug menu, providing a faster way to run scripts in Komodo.
  • A new debugging preference, Try to find files on the local system when remote debugging, has been added. When this preference is turned on, Komodo will search for the debugger file on the local system instead of automatically opening a read-only version of the file retrieved from the debug engine.
  • Komodo now offers full support for Tcl debugging. In addition, runtime Tcl syntax checking no longer requires the Tcl Dev Kit.

Source Code Control

  • The Automatically check out before save option has been moved from "General Source Code Control Preferences" to "Perforce" Preferences, where it appears as Automatically open files for edit before save.

Komodo 2.5 Technology Preview 1 for Solaris (August, 2003)

Komodo 2.5 Beta 1 for Windows, Linux (August, 2003)

Komodo 2.5 Alpha 2 (July, 2003)

Komodo 2.3 (February, 2003)


  • Compatibility issues with ActivePerl 5.8 (VPM), PHP 4.3 (syntax checking) and Python 2.2.2+ (debugging) have been resolved.
  • The XSLT engine has been upgraded to Xerces 2.1 and Xalan 1.4, and includes built-in extensions for that version. (Refer to http://xml.apache.org/xalan-c/extensionslib.html for information about extension support.)
  • The new Windows Integration page in the Komodo Preferences is used to configure system-wide file associations.
  • The Projects and Workspace page in Komodo can be used to have Komodo prompt you to open recent files and projects when you start the program.
  • The configuration of the Komodo workspace is restored after closing and re-opening Komodo.

PHP Configuration Wizard

  • The PHP Configuration Wizard simplifies the previously cumbersome process of configuring PHP debugging extensions in Komodo.

Run Command

  • The Run Command function has been enhanced, and a new Run Command Tutorial has been added.


  • Snippets now support shortcut codes. To view the supported shortcuts, right-click a snippet, select Properties, and click the arrow button in the Properties dialog.
  • The new Add "Open..." Shortcut... item on the Toolbox menu is used to create shortcut links in the Toolbox to directories. Key bindings can be assigned to these links.
  • Items can be exported from the Toolbox. Select the desired items, then right-click and select Export as Project File....
  • Exported Toolbox items can be imported using the Import into Toolbox... menu item, accessible from the Toolbox menu.
  • The new Compare File With... item on the file context menus in the Toolbox and Project Manager is used to compare the selected file with another file selected via a file picker dialog.

Project Manager

  • Projects load much faster than in previous versions.
  • Snippets now support shortcut codes. To view the supported shortcuts, right-click a snippet, select Properties, and click the arrow button in the Properties dialog.
  • The new Add "Open..." Shortcut... item on the Project Manager menu is used to create shortcut links in the Project Manager to directories and URLs. Key bindings can be assigned to these links.
  • The new Compare File With... item on the Project Manager menu is used to compare the selected file with another file selected via a file picker dialog.
  • When a project has been changed, it can be reverted to its last saved state using the Revert Project menu item.
  • Many settings now persist in Komodo's projects, including debugging options and Import from File System settings.
  • The Import from Filesystem function prompts if you want to install all the files in a filesystem, and allows you to deselect desired files.
  • After using the Import from Filesystem function, if you attempt to import the same filesystem location into the same project, only files that are new since the last import will be imported.

SCC Integration

  • If you are using Komodo's Perforce integration, you can now specify an external "diff" tool.
  • The "diff" window displays the original content and the new content in different colors.
  • The "diff" window supports function keys to navigate to changes in the file.


  • Select Show Unsaved Changes from the Editor context menu to view the differences between the version of the file currently displayed in the Editor Pane and the last saved version of the file.
  • Breakpoints and code folding information is stored with the file, and therefore does not need to be reconfigured when the file is closed and re-opened.
  • There is a new automatic indentation style ("Indent to first non-empty column") that can be configured using Komodo's Indentation preferences.
  • The symbols used to indicate folded sections of code (and sections of code that can be folded) can be configured on the Editor|Indentation page of the Komodo Preferences.
  • You can change Read Only status of a file in the file's preferences. Access the file preferences by right-clicking the file in the Editor Pane and selecting Properties and Settings.
  • If you change and save a file with a Read Only status, you will be given the option to "force" the write. This will remove the Read Only flag, save the changes, then reset the Read Only flag.
  • You can specify the language association for an open file in the file's preferences. Access the preferences for the current file by right-clicking the file in the Editor Pane and selecting Properties and Settings. Use the Reset button to reassert the language associated with the file type.
  • Various editor bugs have been fixed, including intermittent failure of the paste function, periodic hanging when large projects were being opened, Perl syntax checking problems and lost code folding after tab switching.

GUI Builder

  • In Komodo's Preferences, you can specify the preferred port that the GUI Builder will use.
  • There are now no constraints for user code added to Python files generated by the GUI Builder.

PDK Support

  • Komodo 2.3 supports version 5 of the Perl Dev Kit, including the new PerlNET and PerlTray components.
  • Support for all the Perl Dev Kit tools has been enhanced.
  • When the Build Standalone Perl Application function is used, settings in the dialog are stored with the file.

Komodo 2.3 beta 2 (February, 2003)

Komodo 2.3 beta 1 (January, 2003)

Komodo 2.0.1 for Linux (November, 2002)

  • See Komodo 2.0 for Windows for a list of 2.0 features included in version 2.0.1 for Linux.
  • International Encoding support now works with European and Cyrillic character sets. Configure encoding support on the Internationalization page of Komodo Preferences.
  • a new Web Preferences page, used to specify the default browser
  • additional Run Command Shortcuts

Komodo 2.0.1 for Windows (October, 2002)

Komodo 2.0 beta 3 for Linux (October, 2002)

Komodo 2.0 beta 2 for Linux (September, 2002)

Komodo 2.0 for Windows (September, 2002)

  • Project Manager
    • add Run commands to projects
    • add GUI dialogs to projects (Komodo Pro)
    • add Web services to projects
    • add macros to projects
    • add code snippets to projects
    • organize objects into folders
    • import groups of files from the filesystem
    • organize the order of objects in projects
    • drag items to and from the Project Manager to the Toolbox and Editor
  • Toolbox
    • add Run commands to the Toolbox
    • add GUI dialogs to the Toolbox (Komodo Pro)
    • add Web services to the Toolbox
    • add macros to the Toolbox
    • add code snippets to the Toolbox
    • add code snippets to the Toolbox
    • organize objects into folders
    • drag items to and from the Toolbox to the Project Manager and Editor
  • Customizable Key Bindings for standard Komodo functions, and for macros and Run commands
  • Source Code Control integration for CVS and Perforce (Komodo Pro)
  • Visual Package Manager integration (Komodo Pro)
  • GUI Builder for building graphical applications (Komodo Pro)
  • Macros for recording and repeating common keystroke sequences
  • Create code snippets by selecting code in the Editor Pane and dropping it into the Project Manager or Toolbox
  • Enhanced "Run" Command
    • save run command to the Toolbox
    • new shortcuts, including escaped % symbol, URL-escaped selection, etc
    • specify starting directory for command
    • specify run location (output window, new console, no console)
    • specify environment variables
    • save advanced options (such as environment variables) as Run command defaults
  • Function Search to quickly find Perl packages and subs, Python or PHP classes and functions, and Tcl procs
  • Incremental Search
  • HTML Preview Tab
  • Customizable Language Help
  • Customizable Cursor, Current Line, Selection and Background Colors
  • "Mark All" option in Find dialog
  • "Remove All Bookmarks" command
  • Printing enhancements
  • Background Syntax Checking
    • hover mouse over icon for total number of errors and warnings
    • double-click icon to move the editing cursor to the next error or warning
  • Tip of the Day
  • 'Ctrl'+'Tab' switches between the two most recently opened or edited files
  • Ability to re-order open files by dragging-and-dropping file tabs in the Editor Pane
  • File tab context menu with common file tasks, such as saving and accessing source code control commands
  • 'Ctrl'+'X' and 'Ctrl'+'C' take entire lines if no text is selected, and will continue to accumulate lines
  • 'Ctrl'+'Shift'+'V' pastes and selects the pasted text
  • Improved word wrapping
  • Partial word movement
  • Overtype / insert toggle support
  • Search through the document for the word under the cursor
  • Web service proxies in Perl programs
  • Brace matching
  • Transposing characters
  • Literal characters

Komodo 2.0 beta 2 for Windows (September, 2002)

Komodo 2.0 beta 1 for Linux (September, 2002)

Komodo 2.0 beta 1 for Windows (August, 2002)

Komodo 1.2.9 (July, 2002)

The following issues were addressed in Komodo 1.2.x releases:


  • (Windows only) Syntax checking now works properly for files located on a network.
  • (Tcl, Perl and PHP) Double-clicking variables now selects the variable prefix.
  • When dragging and dropping text into the Editor Pane, Komodo no longer attempts to open a new file.
  • When dragging and dropping text from the Editor Pane to other parts of Komodo, Komodo was crashing. This has been fixed.
  • When CallTips are displayed, tip highlighting now progresses as statement components are entered in the editor.
  • When opening large HTML files in the editor, Komodo no longer displays a syntax error warning.
  • Search and replace strings containing backslashes are now handled properly.
  • The error regarding invalid regular expressions during search and replace has been fixed.
  • Templates in language directories are now correctly included in the language categories.

General Debugging

  • Watched variables can be manipulated regardless of whether the debugger is running.
  • When the debugger is running, use 'Ctrl'+'F10' to run the debugger to the current cursor position.
  • When the debugger is running, the current line is now highlighted. The highlighting is dimmed when a stack other than the current stack is selected.
  • The debugger now positions the current line in the middle of the Editor Pane.

Perl Editing and Debugging

  • Socket errors in Perl debugger connections have been fixed by the addition of a new configuration item. Select Edit|Preferences|Debugger, and enter the socket port in the Perl Listener Port field. The "CallKomodo" configuration of the PERLDB_OPTS is no longer used, and can be removed. See Debugging Perl Remotely for more information.
  • Support for the overload.pm module has been added.
  • Evals in included files no longer fail when stepping into the included file.
  • "Here" doc styling is now supported.
  • When debugging Perl, the Komodo debugger does not step over "require" statements.

PHP Editing and Debugging

  • Komodo now fails gracefully if the php.ini file does not exist in the specified location.
  • AutoComplete is now available inside strings.
  • The icon on the Komodo start page now correctly shows when PHP has been enabled.
  • AutoComplete no longer fails inside certain string elements.
  • Syntax checking now functions on large PHP files.
  • PHP configuration is correctly reloaded if it is changed.
  • AutoComplete now picks up changes in the php.ini file.
  • The PHP 4.1 / 4.2 debugger extension is included with the Komodo distribution. Note that the 4.1 debugger extension functions with PHP version 4.2.

Tcl Editing and Debugging

  • Breakpoints can now be set in included files.
  • For Tcl Dev Kit users, Prowrap was being incorrectly called, rather than Procheck.


  • PDK version 4.0 is now supported.
  • The Rx Toolkit has better font styling.
  • To speed initial startup, sample Web services are no longer added to the Komodo Preferences.

Web Services

  • When parsing WSDLs, there is now schema support for complex types (however, not all schema is supported).
  • The WSDL parser now parses all XMethods.com WSDL files.

Komodo 1.2.7 RC1 for Windows and Linux (March, 2002)

Komodo 1.2 for Windows and Linux (December, 2001)

Web Service Consumption

Komodo provides Web service support, bookmarks; quickly add Web services to Perl, Python or PHP files (including automatic language support like CallTips and AutoCompletion for Web service objects); browse your Web service bookmark library in the Komodo User Guide.

Share Recipes with the ASPN Cookbook

Komodo provides a fast, easy way to share recipes. Submit your favorite Perl regular expression or Python, Tcl or XSLT code snippet to the ASPN Cookbook.

Enhanced Editing

The Komodo editor detects files that have changed on disk, and gives you the option to reload. Komodo also remembers the "state" of each file in the Most Recently Used list, including cursor position, bookmarks, fold points, language association, and whitespace preference. Undo changes to a file using the Revert File function. Quickly select blocks of code when performing editing functions; configure text to auto-wrap in the editor and to auto-save at the interval you prefer.

Keyboard Shortcuts

New keyboard shortcuts include 'Ctrl'+Insert' (copy), 'Shift'+'Delete' (cut), 'Shift'+'Insert' (paste) and 'Ctrl'+<debug command> (suppress Debug Options dialog). Note that you can also use the 'Ctrl' key in conjunction with the Debugging Toolbar buttons to suppress display of the Debugging Options dialog box.

Find and Replace

Search and / or Replace a word or phrase in all documents open in the Komodo editor. Use the new tab on the Output Pane to view all results from Find or Replace operations.

Templates and Macros

Code faster with language-specific templates. Create custom templates, and embed variables for date and time stamps.

Perl Dev Kit Support

Use Komodo in conjunction with the Perl Dev Kit to build Windows executables, services and controls written in Perl.

Tcl Support

With a membership to ASPN Tcl, use Komodo's syntax checking and debugging with Tcl.

FTP Support

Edit remote files on FTP servers; add remote files to projects; save files to remote FTP servers. Use Komodo's Preferences to configure connection information for servers you use frequently.

Komodo User Guide

Search the User Guide or find a word or phrase in the current page; navigate using the Table of Contents; change the font size. Take a visual tour of the Komodo Workspace, the Komodo Debugger, the Komodo Editor or the Rx Toolkit.

Komodo Tutorials

Learn about new languages and language-specific Komodo features in the Tutorials.


Now supports AutoCompletion.

Fonts and Colors

Customize the display of fonts and colors for elements of every language supported by Komodo.

CGI Debugging Emulation

Emulate a CGI environment while debugging on your local machine by configuring server environment variables and form input.

Enhanced Debugging

Expanded Debugging Options remember your debug settings from one session to another; view HTML output on the Output tab; configure the Remote Debugging Listener Port; enter program input on the Output tab.

Run Commands

Interact with the command line using the Run Commands function.


Set the default encoding for files in Komodo's Preferences. While Komodo does not yet support editing outside of the English character set, non-English characters in existing files will be preserved.

Komodo 1.2 beta 1 for Linux (November, 2001)

Komodo 1.2 beta 2 for Windows (November, 2001)

Komodo 1.2 beta 1 for Windows (October, 2001)

Komodo 1.1 (June, 2001)

PHP Debugging Enjoy PHP syntax checking and debugging with Komodo. You can configure Komodo to debug PHP files locally or within a Web server environment. For more information, see Debugging Programs in the Online Help.

XSLT Debugging - This release supports XSLT debugging. You can view your XSLT file, your XML input file, and your output simultaneously. You can even open an XML file on your Web server and transform the file while you debug your XSLT program. We've also improved the sample XSLT file in our Sample Project. For more information on XSLT debugging, see Debugging Programs in the Online Help.

Tcl support - You can now use Komodo to edit your Tcl files, including syntax coloring, code folding, AutoComplete and CallTips. We added a Tcl file to our Sample Project. If you have Tcl Dev Kit, you can enjoy Tcl syntax checking within Komodo. We plan to include stand-alone syntax checking that does not require Tcl Dev Kit in an upcoming release. Komodo does not yet support Tcl debugging.

Improved Performance - This release is based on the latest Mozilla tree, which includes an optimized code base. Performance improvements include faster installation and startup and faster response while you type or change files. Komodo responds much faster during debugging, when opening files and switching between files, and when loading the File Associations pane in the Preferences dialog.

Support for more languages - You can now use Komodo to edit Ruby and other languages, such as VB and SQL.

Improvements for Komodo on Linux - You can now resize the Komodo workspace, you can use fixed-width fonts, and you can debug Perl scripts if you have Perl 5.6 installed and configured.

XML AutoComplete - Komodo now features AutoComplete for your XML files. When you type an open angle-bracket "<", Komodo lists the elements in your file. Komodo XML AutoComplete also lists tag attributes and suggests attribute values for certain values. XML AutoComplete also helps you close your tags.

Expanded Find and Replace dialog - You can now use regular expressions in your find and replace strings, you can search through folded text, and more.

Partial Unicode support - Komodo supports ASCII, Latin-1 and Unicode (UTF-8, UCS-2 or UCS-4) encoding. If you use Komodo to edit a file that has a different character encoding than those mentioned above, non-English characters may be removed when you save the file.

Komodo 1.0 (April, 2001)

Komodo .1 (November, 2000)