Komodo IDE/Edit 8.5 Release Notes

These Release Notes cover what's new, detailed changes and bug fixes and known issues for Komodo IDE and Komodo Edit.

What's New in Komodo IDE/Edit

8.5

Code Refactoring: The new Komodo refactoring component has these smart code-transformation capabilities:
- Rename Variable: quickly and easily rename variables in the editor. It uses inline markers and multiple cursor selections to easily change the name of a code variable.
- Rename Class Member: similar to rename variable, but works on all instances and across multiple files.
- Method Extraction: move parts of your code into a new function. Any variables used in the selected text are refactored into function arguments and are then passed to the extracted method. Note that code refactoring will only work with languages that provide code intelligence information (i.e. PHP, Perl, Python, Ruby, JavaScript, Node.js).
Abyss theme: A new dark theme for the Komodo user interface has been added. This theme affects the Komodo UI elements outside of the main editor (i.e. different from Komodo color schemes which only affect the main editor colors). You can enable Abyss in the Komodo Appearance preferences.
PHP 5.5 Support: We've added support for PHP 5.5, with a new Xdebug module (for PHP debugging and Code Profiling), updates for the two new keywords (yield, finally) and updates to code intelligence to provide the latest API data for PHP 5.5.
Breadcrumbs: A file and directory navigation bar has been added to the Komodo statusbar. This bar shows the directory ancestors relative to the current editor file, allowing you to easily find and open related files. You can use mouse and/or keyboard to navigate entries and filter down the list of files displayed.
Multiple Selections: In addition to Komodo's rectangular (column) editing, you can now have multiple caret positions in the editor. Typing or editing commands will be reflected at all caret locations. Use the editor's right-click context menu and click on 'Select > Multiple Selection - Add'. Then you can use Ctrl+Click (Cmd+Click on the Mac) to place additional carets and selections.
Button Menu: Komodo can now be configured to use a collapsed toolbar button menu, instead of a full menu bar (does not apply to Mac OS X). This can be useful when you want to maximize your vertical editing space. A bonus of this feature is that the last used menu items will also be displayed in the top-level of the button menu, making it quick and easy to run the same menu command again.
Python Symbols: Due to popular demand, we've now added two-character length triggering for Python symbols. For example, when you type "im" you'll now see completions for "import" as well as any local variables, functions, classes and builtins that are in scope and have a name starting with "im".
Code Intelligence Out-Of-Process: Komodo's code intelligence system (code scanning, calltips, completions, goto definition, refactoring, etc...) is now handled by an external process. Mostly you won't notice any changes in functionality, but this does boost Komodo's responsiveness whilst editing.
Mac Improvements: Drawing is smoother and Komodo can draw using the integrated graphics card. There were some edge cases on Retina screens where drawing glitches could occur in the editor component, leaving unwanted artefacts - this has now been fixed. Komodo can now work with the integrated graphics card - which can lead to improved battery life on laptops.
Performance: Various performance tweaks were made to Komodo 8.5 to improve the editing performance, as well as improving the search speed, syntax checking times and general responsiveness of Komodo.
Other Mentionables
- Side pane scrollbars now fade out when they are not in use
- Open Files now includes additional sorting and grouping options
- Font Quality (anti-aliasing) preferences were added (Windows and Mac OS X)
- Komodo now updated to use the Mozilla 24, Scintilla 3.34 and Python 2.7.5

Detailed Changes and Bug Fixes in Komodo IDE/Edit

Changes related to Debugging, Interactive Shells, Source Code Control, HTTP Inspector, Rx Toolkit, Code Browser, Database Explorer, Stackato and the Sections List only apply to Komodo IDE only.

8.5.4 Bug Fixes

Code Intelligence: CSS: Show pseudo completions after ":".
Code Intelligence: PHP: Fix memory leak in PHP file scanning. (Bug 102643)
Code Intelligence: JavaScript: Ensure document completions work inside of HTML. (Bug 102993)
Debugging: Python 3: Update log-level matching code to work on Python 3.4. (Bug 103631)
Debugging: Tcl: Update appLaunch.tcl file. (Bug 101199)
Editor: Automatically enable word-wrap when a file has long lines. (Bug 93790)
Editor: Django: Highlight 'elif' tag, 'elseif' in Twig (and improve auto-indent). (Bug 101792)
Editor: Fix high DPI popup positioning on Windows. (Bug 100492)
Editor: When changing case in column selection, stay in column selection. (Bug 100269)
Find: Ensure find markers are not added more than once. (Bug 104553)
Find: Stop find options from changing when using multi caret commands. (Bug 103329)
Places: After creating a new file, open it and display it in places. (Bug 94287)
Places: Cull deleted items in places history menu. (Bug 98684)
Preferences: Indentation Settings: Allow per language settings to be saved. (Bug 99431)
Projects: When opening a new project is aborted, keep the old project on the MRU list. (Bug 94201)
SDK: Ensure koext startlang works with --is-html-based argument (Bug 104551).
Source Code Control: Checkout: Remember the checkout textbox url. (Bug 99395)
Source Code Control: Git: Ensure git submodules are properly detected in commit dialog. (Bug 95701)
Syntax Checking: Python: Reinstate passing --rcfile to pylint, and add tests to verify it works. (Bug 101777)
Syntax Checking: Python: Tell pylint where to find .pylintrc. (Bug 101777)
Toolbox: Stop duplication of snippets when dropping snippet text. (Bug 103113)
UI: Re-enable word-wrap in output panels (command output, debugger output). (Bug 98471)

8.5.3 Bug Fixes

Code Intelligence: Fix case where codeintel startup could fail due to race condition. (Bug 101543)
Code Intelligence: Performance: Avoid rescanning dependent files on modification. (Bug 101312)
Code Intelligence: PHP: Allow goto definition on foreach variables. (Bug 100701)
Code Intelligence: Python: Ensure code scanning supports the "yield from" syntax. (Bug 101404)
Code Intelligence: Sections List: Ensure HTML/XML section lists are updated after editor modifications. (Bug 101442)
Code Intelligence: Sections List: Sometimes the list would not show due to a recursion error. (Bug 101280)
Crash Reports: Re-enable the crash report dialog. (Bug 101006)
Debugger: Make sure we can debug Python3 programs that contain non-ascii data in strings (and comments). (Bug 101268)
Debugger: PHP: Update Xdebug to version 2.2.3. (Bug 101265)
Debugger: Tcl: Include a Tcl debug engine for Win64, and choose it at runtime when the tclsh.exe or wish.exe interpreter is 64-bit. (Bug 101199)
Debugger: When starting a remote-debugging session, make sure the pref for stopping at the first breakpoint is respected. (Bug 100884)
Editor: Ensure caret is scrolled into view when opening files and jumping to definitions. (Bug 98866)
Editor: Make sure cmd_addNextWordToCaretSet (default binding: Ctrl-D) works in presence of high-bit chars in the document. (Bug 100931)
Editor: Minimap: Don't change the first line in the screen when tabbing/shift-tabbing a block with the minimap visible. (Bug 101318)
Editor: Minimap: Improve editor scroll handling and scrolling performance when minimap is enabled. (Bug 100956)
Editor: Performance: Speed up UDL processing for files with very long lines (includes PHP, XML, HTML, Django, etc). (Bug 101267)
Editor: Prefs: Increase the file size limits that control switching to a plain-text language. (Bug 101629)
Editor: Prevent repeatedly pressing Ctrl-D (Add next word to multiple selection) from crashing Komodo. (Bug 100955)
History: Make sure history db corruptions do not cause startup failures. (Bug 101551)
Hyperlinks: Ensure the PHP include handler works over the full include statement. (Bug 101505)
Languages: Support C++11 keywords. (Bug 101299)
Linux: Editor: Allow rectangular paste on Linux. (Bug 82591)
Mac: Disable the scroll width preference, as it can mess up the editor display. (Bug 88586)
Mac: Editor: Focus the editor when mouse clicking on the line number margin. (Bug 101290)
Mac: Editor: Make sure text is pasted into every selection when a multiple-selection/caret session is in effect. (Bug 101220)
Macros: Make sure macro and snippet contents are always up to date when editing them in the editor. (Bug 101263)
Macros: Show accurate macro line numbers for syntax errors and runtime errors when executing macros. (Bug 95519)
Preferences: Make sure project internationalization settings are correctly saved to project prefs. (Bug 101174)
Refactoring: Make sure undo (and other operations that end multi-caret editing sessions) don't corrupt the undo-stack. (Bug 100837)
Rx Toolkit: Don't throw an exception on startup when the regex field is empty. (Bug 100694)
Rx Toolkit: Clear errors when switching between different regex languages. (Bug 97340)
Source Code Control: The Git push dialog no longer gets stuck at the end of a push. (Bug 99920)
Syntax Checking: Make sure files are linted when they are first opened. (Bug 101552)
Syntax Checking: PyLint: Support pylint 1.0, which stopped supporting the -i argument. (Bug 100028)
Syntax Checking: PyLint: Support pylint for Python3 code. (Bug 96733)
Syntax Checking: RHTML: Wrap <%= ... %> constructs with 'Proc.new {' ... '}.call;' to avoid bugus syntax errors. (Bug 100835)
UI: Added a Getting Started dialog to Komodo that helps new users get the basics of Komodo. (Bug 98250)
UI: Button text in the toolbar will now properly show when using a hidpi (cupertino) icon set. (Bug 100933)
UI: Icons: Checkboxes and radio boxes were sometimes not showing in menu's under Abyss.
UI: Moved trial message out of statusbar and into notification, so that its not blocking breadcrumbs. (Bug 100548)
Windows: Support high DPI on Windows, for editor right-clicking and context menus. (Bug 100492)

8.5.2 Bug Fixes

Code Intelligence: Reduce memory usage by properly clearing requests and working variables. (Bug 100994)
Editor: When saving, fix the "Strip trailing whitespace" preference from removing lines. (Bug 100967)

8.5.1 Bug Fixes

Code Browser: Fix case where code browser can stop working when editing HTML code.
Code Intelligence: JavasSript: Add rudimentary support for ES6 fat arrow functions. (Bug 100070)
Code Intelligence: Python: Include 2 character keywords in the local symbols completion list. (Bug 100471)
Code Intelligence: Tcl: Ensure completions get inserted on Tab keypress. (Bug 100332)
Colour Picker: Added keybinding to launch colour picker without an existing hex colour. (Bug 99413)
Debugging: Python: Prevent debugger crash when debugging numpy. (Bug 100540)
Editor: Don't throw an exception on null views when closing all buffers. (Bug 100508)
Editor: Ensure saveAs works when linting is disabled. (Bug 100476)
Editor: On close, if an untitled buffer failed to save then leave the buffer open. (Bug 100455)
Editor: Speed up editor scrolling. (Bug 100536)
Editor: Stop a breakpoint click from also performing code folding. (Bug 100390)
File Associations: Associate ".inl" file extension to the C++ language. (Bug 99525)
Mac: Allow hyperlinks to work after the editor is scrolled. (Bug 100487)
Mac: Ensure python is installed correctly for out-of-process codeintel. (Bug 98931)
Mac: Ensure retina icons are enabled. (Bug 100549)
Mac: Fix variable highlight coloring after scrolling. (Bug 100361)
Mac: Stop high CPU usage when idle. (Bug 100457)
Find: Stop editor background color from leaking into the find bar. (Bug 100441)
Places: Support copying folders. (Bug 100160)
Refactoring: Rename Variable: Don't give up when an occurrence of the current variable occurs inside a comment or default text. Accept it, and carry on. (Bug 100499)
Remote Files: Stop delay when switching between remote file editor tabs. (Bug 100525)
Spellcheck: Make sure the spellchecker correctly replaces with the suggested text. (Bug 100612)
Startup: If no buffers are loaded, stop history from trying to log the current buffer. (Bug 100501)
Syntax Checking: JSLint: Get jslint and jshint working again by allowing for the scriptArgs. (Bug 100530)
Unit Testing: Support creating unittests for Python3. (Bug 98705)

8.5.0 Bug Fixes

Collaboration: Allow ko.collaboration.shareCurrentTabInNewSession. (Bug 95867)
Editor: Add a pref to control whether tab skips over soft characters. (Bug 95685)
Editor: After pressing tab, update the caretX setting. (Bug 95409)
Editor: Ensure "Save as" properly maintains the language name. (Bug 100142)
Editor: Implement select current/next word in multi-caret sessions. (Bug 99924)
Editor: Mac: Allow scrolling with magic mouse and trackpad. (Bug 99862)
Editor: Mac: Ensure mouse actions use the correct editor co-ordinates. (Bug 100140)
Editor: Mac: Fix drawing glitch in the editor. (Bug 99863)
Editor: Mac: Stop editor glitches when resizing the editor view. (Bug 99863)
Editor: Mac: Stop white flashes when using a dark background. (Bug 100251)
Editor: Show matching tag when clicking between "<" and "/" in an end-tag. (Bug 96641)
Editor: When ESC (or cmd_cancel) is pressed, turn off adjacent soft characters. (Bug 100228)
Editor: When dragging text, remove the large opaque drag image. (Bug 100041)
Interpolation Shortcuts: Get %node interpolation working. (Bug 98915)
Preferences: Persist word wrap setting on a per document basis. (Bug 100275)
Syntax Checking: At startup verify that klint is ready to fill in the syntax checking status pane. (Bug 100198)
Syntax Checking: After switching to a language without linting, clear the syntax checking status panel. (Bug 97951)

8.5.0b3 Bug Fixes

Bug 100000, Yay!? (Bug 100000)
Breadcrumbs: Move into the statusbar so that they don't use up any additional screen real estate.
Code Intelligence: Catalogs: Don't force a catalog zone update when setting catalog dirs. (Bug 99807)
Code Intelligence: Improve performing of directory scanning. (Bug 100077)
Code Intelligence: Python: Ensure calltip for @staticmethod functions is correct. (Bug 86260)
Code Intelligence: Python: Offer completions for local symbols (variables, classes, ...). (Bug 59937)
Code Intelligence: Python3: Process function annotations. (Bug 99671)
Code Profiling: Better detection of recursion in the hierarchical view. (Bug 92444)
Code Profiling: Load the profile data asynchronously. (Bug 92444)
Debugger: Fix regarding high-bit characters in values (and property names). (Bug 99588)
Debugger: Support remote debugging from Windows to non-Windows machines. (Bug 99683)
Editor: Abbreviations: Support auto-abbreviations for all text-like languages, not just the HTML-like ones. (Bug 99817)
Editor: Added "fast characters", typing ";" before a run of soft characters at the end of a line will move over and harden the soft characters. (Bug 99812)
Editor: Allow tab to hop over soft characters to the right. (Bug 95685)
Editor: Easy xml tag movement using Html Tag Relocator command. (Bug 96261)
Editor: Ensure that pressing tab in a rectangular "line" selection inserts a tab or correct # of spaces at each line. (Bug 99066)
Editor: If pressing tab and there's a multi-line selection, favor indenting the selection over moving to the next tabstop. (Bug 99067)
Editor: Mac: Ensure fonts look the same as previous Komodo versions. (Bug 99891)
Editor: Mac: Ensure margins are redrawn when scrolling the editor. (Bug 99808)
Editor: When saving as a different filename, only re-guess the language if the file extension has changed. (Bug 99822)
File Picker: Disable "Unresponsive Script" warnings when browsing for files. (Bug 91614)
Keybindings: Mac: Allow shifted and unshifted cmd key variations. (Bug 92880)
Keybindings: Mac: Change jump to matching brace keybinding to Cmd+Shift+M. (Bug 98394)
Preferences: Ensure lang-specific settings get saved. (Bug 99431)
Preferences: Fonts: Add preference for controlling anti aliasing and font smoothing (Windows, Mac). (Bug 98036)
Preferences: Persist language when changed via the file preferences dialog. (Bug 99822)
Projects: Fixed the "Manage the Most Recent Project Lists" dialog so it actually removes selected projects. (Bug 99770)
Refactoring: Extract Method: Detect parallel assignments to variables. (Bug 99788)
Refactoring: Extract Method: Implement extraction of top-level code in Python. (Bug 99441)
UI: Abyss skin now styles all windows, not just the main editor window. (Bug 99448)
UI: Fixed skin detection issues on Xubuntu. (Bug 99825)
UI: Statusbar: Fix background drawing glitch when the loading icon is showing. (Bug 100039)
UI: Statusbar: Remove background glitch when the loading icon is displayed. (Bug 100039)
Workspace: Restore the workspace by default. (Bug 99772)

8.5.0b2 Bug Fixes

Debugger: Tcl: Ensure Linux 64-bit remote debug package contains correct executables. (Bug 99608)
Debugger: Tcl: Ensure the debugger honors hit-count breakpoints. (Bug 98756)
Dialogs: Stop popup dialogs from using the whole screen width. (Bug 99506)
Editor: Auto Abbreviations: Disable HTML style and script abbreviations. (Bug 99499)
Editor: Auto Abbreviations: Allow auto abbreviation command (Ctrl + T) in Text files. (Bug 99605)
Editor: When opening a file make sure the cursor is in view. This broke moving to Komodo 8.0. (Bug 98866)
File Associations: Ensure ".htaccess" is recognized as an Apache file. (Bug 99558)
Mac: Retina detection has been improved.
Open Files: Files will now show SCC icons.
Performance: Various performance tweaks to speed up editing, searching and syntax checking.
Refactoring: Add a keybinding for the Rename Variable command. (Bug 99440)
Syntax Checking: CSS: Add a Mozilla based CSS checker. (Bug 89710)
Syntax Checking: Django: Look for settings.py in sibling directories. (Bug 99362)
Syntax Checking: HTML: All HTML template languages now default to HTML5 doctype. (Bug 99062)
UI: Skin: The iconset for the Ambiance skin is now properly detected automatically when Ambiance is auto-selected.
UI: Menu Button: The main menubar can now be collapsed into a single toolbar button.

8.5.0b1 Bug Fixes

Breadcrumbs: Komodo now comes with Breadcrumbs, allowing you to easily navigate the directory structure of the currently opened file.
Codeintel: Track line numbers of function-arguments so go-to-definition doesn't go to line 1 column 1. (Bug 99177)
Debugger: Node.js: Move to upstream _debugger.js. (Bug 98180)
Debugger: Python: Ensure breakpoints continue to work after exec() builtin is called. (Bug 98951)
Debugger: Python: Report types of ints and bools correctly, not as "str". (Bug 98546)
Debugger: Tcl: Ensure the debugger will honor 'break when hit-count is a multiple of X' breakpoint properties. (Bug 98756)
Debugger: XSLT: Add Linux x86_64 version of the xslt debugger. (Bug 90774)
Editor: Abbreivations: Allow expanding in single-line comments. (Bug 98154)
Editor: After opening a file, ensure the caret is visible. (Bug 98866)
Editor: Better handling of column selection undo. (Bug 99068)
Editor: Ruby: Syntax-highlighting had trouble distinguishing code like "a<<x". (Bug 99260)
Editor: Stop invalid scrolling (jumping) back to line 0. (Bug 98577)
Keybindings: Vi: Preserve the caret position when a search doesn't match anywhere. (Bug 99018)
Fast Open: Enable shortcuts for upgraded Komodo profiles. (Bug 98889)
Fast Open: Fixed a memory leak with Fast Open project caching. (Bug 99023)
Fast Open: Mac: Ensure file icons are not double sized on retina displays. (Bug 98798)
Formatters: JavaScript: Expose js_beautify formatting options in preferences. (Bug 98905)
Open Files: Added various sorting and grouping options.
Places/Toolbox: Ensure drag/drop works for tree widgets in floating panes. (Bug 98472)
Projects & Places: You can now double click a folder to expand/collapse it (if "double click to make folder root" is turned off).
Publishing: Enforce configurations to have a name. (Bug 96023)
Remote Files: SFTP: Enable zlib compression if supported by the server. (Bug 98376)
Startup: Mac: Stop system Python modules from interfering with Komodo's internal Python. (Bug 98957)
Syntax Checking: Ensure "clear lint results on change" preference works correctly. (Bug 97965)
Syntax Checking: Don't redraw markers based on an out-of-date error locations; just let the usual editing operations push the markers around. (Bug 97965)
Toolbox: Add a "treatasejs" field to snippets, default false. Komodo will run snippet code through EJS only when this setting is enabled. (Bug 98464)
User Interface: Don't change the focus when toggling open the bottom pane.
User Interface: Toolbar elements in the bottom pane have been reorganized to be consistent and intuitive.

Known Issues

To view the status of outstanding Komodo issues, including those that have been fixed in this release, or to add comments or additional issues, please visit the Komodo Bug Database.

Installation & Upgrade

Windows Vista will prompt you to either 'Allow' or 'Deny' the installation. Click on 'Allow' and Komodo will install normally.
The Komodo installer requires up to 230 MB in your TMP directory (as indicated by the value of your 'TMP' environment variable) during installation, even if you plan to install Komodo to another drive. If you do not have the required space on this drive, manually set the 'TMP' environment variable to another directory with sufficient space. Ensure that you have enough space, temporarily, for installation. (Bug 7057)
If you try to install Komodo on Windows and the MSI install fails with error 2355, your MSI file is corrupt. Please download Komodo again and re-run the MSI install. (Bug 7405)

Startup and Shutdown

Slow performance on NoMachine (remote desktop) has been reported - bug 93841.
On Windows, Direct Folders application can cause shutdown hangs
bug 101357.

Editing

Tabstop syntax has changed in Komodo 5.0. Abbreviation from the Toolbox|Samples directory of pre-5.0 versions of Komodo will not work as expected with the current implementation. Delete the older versions to use the ones featured in the "Samples (5.0.0)" directory. Alternatively, if you have made modifications to these snippets or have implemented your own using tabstops linked by name, consult the documentation and revise them using numbered linking.
By design, Komodo does not attempt Replace in Files operations on unknown file types. However, file association preferences can be used to associate a user-defined extension with a language category (e.g. "Text") which then enables replacements for that file type.
Linux users may need to install the SCIM platform packages for non-ASCII text entry. See "Linux Software Prerequisites" in the Installation Guide for details. (Bug 70812)
While autocomplete on many of the modules in the Python PyWin32 packages works, Komodo's PyWin32 API catalog currently does not have information for: pythoncom and the binary sub-modules of win32com.
The macro recorder will record events that it cannot handle, such as the opening of dialogs. The only dialog that can be opened via a macro is the Find dialog; other dialogs will cause the macro to stop.
Languages that are read right to left (e.g. Middle Eastern languages like Arabic) are not supported. All Latin, Cyrillic and Far East languages are fully supported. (Bug 75477)
On slow networks, users may notice performance degradation when editing files on network machines. Performance can be improved by disabling the Komodo function that checks if files on disk have changed. Use the Editor Preferences to disable this feature. (Bug 18297)
Interpolation shortcuts in snippets are not executed when the snippet is inserted in the Editor Pane via dragging and dropping.
On Linux, GTK2 hard codes 'Ctrl'+'Shift' to use international input. Therefore, all key bindings involving 'Ctrl'+'Shift'+ (any valid hexadecimal character) do not work in Komodo. A workaround is to start Komodo with the command: export GTK_IM_MODULE=xim; ./komodo'. Otherwise, key bindings of this kind must be changed. (Bug 38205)
When copying text that does not have Windows line endings into another application, which expects Windows line endings, the text may not retain the desired formatting. The text is often pasted as a single line. (Bug 36791)
Code snippets that are 8-bit-encoded and contain high-bit characters may have the wrong encoding (or no encoding) when inserted from the Toolbox into a UTF-8 encoded file in the Editor Pane. (Bug 36769)
When editing a code comment in Komodo you may use <Shift+Enter> to start a new line within the comment -- the comment prefix is added automatically. Komodo may fail to properly add the comment prefix if many new lines are added quickly with repeated <Shift+Enter> presses. (Bug 38658)

Debugging

PHP: The xdebug.remote_autostart option will interfere with local debugging configuration in Komodo if it is enabled. If you need this option enabled for remote debugging, set the Path to alternate PHP configuration file under Preferences|Languages|PHP to point to a copy of php.ini without this option.
PHP: A non-empty doc_root setting in php.ini causes a 'No input file specified' error when starting a local debugging session with CGI emulation. The Web Developer Suite 2.0 package and others use this setting, and it is copied into the debugging version of php.ini during PHP auto-config. Comment this setting out in the file specified in 'Preferences|Languages|PHP|Path to alternate PHP configuration file' to avoid this problem.
Python: Breakpoints will not work with the Psyco extension enabled. The Komodo FAQ has a work-around solution.
Tcl 8.5: Tcl Beta releases contain only version-specific executables (e.g. tclsh85.exe and wish85.exe). Komodo does not automatically find these in the path. To use them, specify the executables manually in Edit|Preferences...|Languages|Tcl|Interpreters, or create non-versioned symlinks/shortcuts to the versioned executables.
The Perl debugger uses alarm() internally. This can conflict with some Perl frameworks and modules (such as POE) which use alarm() as well. To work around this problem, add alarm=0 to the PERLDB_OPTS environment variable (in the Environment tab of the Debugger Options) which stops the debugger from using alarm(). With this work-around in place, the Break Now button and menu item will not work in debugging sessions.
Python debugging with IronPython does not currently work as there is no support for Python debugging hooks in IronPython.
In PerlApp executables, it is now possible to step into loaded modules, but not to set breakpoints in them.
PHP 5.0.0, 5.0.1 and 5.0.2 do not work with the debugger extension. You can use PHP version 4.4.x, a version greater than PHP 5.0.2.
If the debug listener (Debug|Listen for Debugger Connections) is off, multithreaded applications may not run or debug as expected. Only the main thread operates through the debugger. To debug multithreaded applications, turn on debug listening prior to debugging. (Debug listening is turned on by default.) (Bug 32776)
PHP configurations that use Zend Extensions (such as PHP Accelerator) are not compatible with the Komodo PHP debugger. (Bug 21890)
Due to the way the core Perl interpreter works, it is not possible to step over "require" statements. (Bug 18776)
You cannot debug 'freestanding' executables created with the PDK in Komodo. Instead, build a 'dependant' executable, which requires a local install of ActivePerl.
The variable watcher does not work when debugging _\\machine\d$\path\to\perl_script.pl_. It does work when opening the same file via a UNC path that does not include a '$' character. (Bug 19558)
When debugging remote applications, Komodo fails if the remote process does not have valid stdout and stderr handles. GUI applications, such as those started with "wperl.exe" or "pythonw.exe", or those using the Pythonwin or wxPython frameworks, or those with certain embedded applications, can have invalid stdout and stderr handles. Until we resolve this issue, try to run and debug your remote program under perl.exe or python.exe.
Python, XSLT and PHP debugging require TCP/IP to be installed and properly configured, even if you are debugging scripts locally. While TCP/IP is configured by default on most systems, early versions of Windows may require manual TCP/IP configuration.
When debugging a GUI script in Komodo, adding a "watched variable" when not stopped at a breakpoint can cause Komodo to hang. You must manually terminate the script being debugged to stop Komodo from hanging. The problem occurs because the GUI script, while in its message loop, does not respond to Komodo's request for the variable value. (Bug 23516)
If the Komodo debugger is configured to use a specific port, when Komodo is shut down, the port is sometimes not immediately released. If Komodo is restarted before the port is released by the operating system, a message is displayed advising that the system is unable to bind that port. As a workaround, we suggest configuring port 0 as the Komodo debugging port and using the debugger proxy for remote debugging. (Bug 32821)
Breaking into a running Perl script can only occur while crossing sub boundaries in the Perl code, as that's currently the only chance the Perl debugger has to check to see if the IDE has sent the break command. (Bug 35611)
When debugging Perl, if you set a breakpoint on the while statement, the debugger stops on the breakpoint only once, namely before the first pass through the loop. This is a limitation in the Perl interpreter. (Bug 34866)
Komodo debugger uses TCP/IP networking for communications. On systems with firewalls installed, the debugger may fail if the firewall is not configured to allow Komodo to listen for connections. On Windows, you may see a "Windows Security Alert" dialog asking if you want to allow Komodo to listen for connections, you will need to unblock Komodo. (Bug 21684)
The Perl debugger cannot trap fatal runtime errors. Users can accomplish this in their code by wrapping problematic code in an eval block, and then testing for an exception. (Bug 33855)
Komodo does not provide proper source debugging in Python exec and eval statements. This is a limitation of Python's interpreter. (Bug 40336)
When debugging PHP on a remote Linux machine from a local Windows machine, the debugging option "Try to find files on the local system when remote debugging" has no effect. This is due to differences in Unix and Win32 file paths. (Bug 39137)
When debugging Python, Komodo does not permit you to set local variables in the interactive shell. However, you can edit those values from the program's variable viewers, such as the Watch and Locals panes on the Debug tab. (Bug 36794)
When debugging PHP scripts on Komodo with CGI emulation, you may need to change the setting for cgi.force_redirect in the php.ini file. You may also need to set an environment variable in the Debugger Options dialog box: "REDIRECT_STATUS=200 OK". These settings vary depending on your system and the configuration of PHP. (Bug 35021)
When Debugging PHP, the HTML pane of the Output tab does not refresh automatically. To refresh the contents of this pane, click the "Reload HTML view" button on the Output tab. (Bug 36999)
Komodo supports full Unicode debugging with Perl 5.8. Although Perl 5.6 can be used for debugging programs with single-byte encodings (e.g. cp1251), it is recommended that programmers with multi-byte character sets upgrade to Perl 5.8.5 or better. (Bug 36760)
When debugging Python, if you launch the debugger from a directory containing a module with the same name as one of the modules used by the debugger, the wrong file is used. For example, if you have a file named logging.py in the directory where the debugger is launched, the debugger will fail. (Bug 36783)
When stepping through Perl files, the Komodo debugger displays the wrong print results in the Locals window of the Debug tab. This is because Perl provides only one iterator for each collection variable. The Komodo debugger must iterate through a hash or an array in order to display the values in Komodo. A workaround is to display the Watch pane instead of the Locals pane, and type the names of the expressions that you want to view. (Bug 33668)
As of Komodo 5.0, the Perl debugger emits numeric hash keys with embedded underscores. For example, a hash key of '123456789' now appears in the variables tabs as '123456789'.
Breakpoints don't work in files with symlinks in their path. The debugger engine calculates whether to break based on the actual file path. To work around this limitation, load the file in Komodo using the real path, or create a hard link (e.g. on Linux, use 'ln' without the '-s' option). (Bug 79147)

Interactive Shell

The interactive shell does not initialize properly when invoked while the Command Output tab has focus. To avoid this, switch focus to another tab or sidebar before starting the interactive shell.
Perl: Only pattern variables $1 .. $9 are preserved across each query. (Bug 34528)
Python: The getpass package requires the use of a tty on UNIX systems. Komodo does not provide a tty in its interactive shell so getpass will fail with an exception. (Bug 34259)

Source Code Control

The SCC Checkout wizard, SCC Commit and SCC Push features does not correctly handle password authentication. SCC commands requiring password authentication should be done at the command line, or be setup to use password-less authentication mechanisms.
A bug in CVS will cause WinCVS and TortoiseCVS to detect file changes when a Komodo project has merely been opened. The problem is likely a bug in the cvshome.org executable or in the cvsnt.org executable, which are used by both WinCVS and TortoiseCVS. (Bug 21085)
Komodo's integration with the Perforce commit/submit command cannot commit files that are not in the default changelist. These files must be submitted via an external interface (e.g. p4, P4Win). Note that any files checked out inside Komodo are in the default changelist, so this limitation should only apply to users who already use an external interface to their Perforce repository. (Bug 27070)
If the Perforce connection cannot be established, checking the status of files in a Perforce repository will hang Komodo. (Bug 35058)
If you are using CVS Source Code Control, note that the very first time you log in to a repository, cvs.exe fails to create the .cvspass file correctly and will return an error. Repeat the command to login a second time and correctly generate the file. This is a CVS bug. (Bug 20353)

Mac OS X

If you have two drives with the same name, and you use the file open dialog in a Mozilla application, the directory menu (top middle of dialog) may crash when clicked. To avoid this, rename one of the hard drives.
New Custom Menus created in a Project or in the Toolbox will not appear until Komodo has been restarted.
Throughout the Komodo documentation there are references to key bindings that use the 'Cmd' key. This key may be better known to OS X users as the 'Command' key. (Bug 41959)
Komodo will shut down and restart itself the first time it is run after installation. (Bug 40143)
Display of text during editing ("painting") may sometimes be slow or pause momentarily.
Certain UI elements stop working after changing key bindings. Restarting Komodo fixes this. (Bug 38683)
When saving a file, Komodo does not set file information (type and creator) for the OS X Finder to know that Komodo created the file. (Bug 38745)
Breakpoints cannot be removed when debugging XSLT scripts. (Bug 40072)
PHP debugging will not work with the PHP build distributed with OS X because it does not load external modules. To use PHP debugging on OS X, build PHP from source or download a binary from http://www.entropy.ch/software/macosx/php

(Bug 39901) * Komodo is sometimes recognized as a web browser by some applications on OS X (e.g. Safari's "Default Web Browser" setting). Using Komodo as the default web browser is not recommended. * Application menu items that have multi-key key bindings will not show their key bindings in a pop-up tool tip on OS X. This is a limitation in OS X. * Context menus may not display unless you hold down the mouse button for a period of time. This is because the Komodo editor is implemented in Mozilla as a plugin, and it does not access the appropriate context menu event to handle this behavior properly without interfering with other mouse events (for example, drag and drop). (Bug 41216) * Due to a limitation in the Mozilla code base, key bindings for the Next File and Previous File options on the Window menu are not displayed next to the menu items. The key bindings are 'Cmd'+'PageDown' to view the next file and 'Cmd'+'PageUp' to view the previous file. (Bug 40716)

Linux

The Fonts and Colors pane in the Preferences dialog box displays the same list of fonts in both the Fixed and Proportional lists. There is no programmatic way to identify whether a font is proportional or not on GTK; therefore, users must know the properties of the individual fonts when modifying these values. (Bug 27206)
Install Komodo into a directory path that only includes alphanumeric characters. Komodo is known to have trouble with paths that include spaces and some non-alphanumeric characters.
Key bindings defined in the window manager (such as KDE) take precedence over Komodo key bindings. In the case of conflicts, you must either change the Komodo key bindings or the window manager key bindings. (Bug 30926)
You cannot move an existing Komodo installation to a new directory. You must uninstall Komodo from the existing location and reinstall it in the new location. (Bug 19478)
Red Hat Linux 9.0 is known to have threading library bugs in its glibc that may cause Komodo to hang in certain situations. The recommended solution is to upgrade to the latest glibc for Red Hat Linux 9.0. (Bug 24340)
Using colon-separated include paths in the Perl shebang line causes a parse failure on some versions of Perl. Instead of using "/usr/bin/perl -cwT -I/path1:/path2 yourscript.pl", try using multiple include arguments such as "/usr/bin/perl -cwT -I/path1 -I/path2 yourscript.pl"

(Bug 33524)
Komodo may not start up correctly on some Linux systems if C++ compatibility libraries have not been installed. On Fedora and Red Hat systems, install the "compat-libstdc++" package. On SuSE, install the "compat" package. On Gentoo, as root, run emerge lib-compat. This is not thought to be a problem on Debian systems. (Bug 36244)
Komodo is not compatible with Kubuntu 11.04 or OpenSuSE 11.4. Workaround in bug (Bug 90985).

Other

A limitation in the parser used by the DOM Viewer causes HTML elements embedded in JavaScript strings to appear as element nodes of the current document. Placing the JavaScript in a CDATA section or a comment avoids this problem.
Komodo inherits a Mozilla bug whereby certain video drivers on Windows cause Komodo to crash. If you experience this behavior, upgrade your video driver to the latest version. If the problem persists, reduce the color definition assigned to the driver (Control Panel|Display|Settings). (Bug 32746)
Komodo inherits a Mozilla bug regarding display on dual-monitor systems where the secondary monitor is to the left of the primary monitor (causing negative coordinate results). The Komodo display occasionally fails to refresh; Komodo must be stopped and restarted to fix the display (Bug 26852)
The Palm Desktop for Windows software makes exclusive use of the 'Ctrl'+'Shift'+'T' key combination, thus making this combination unavailable in Komodo. (Bug 27851)
When using the PDK Build Standalone Application feature in Komodo with Perl 5.8.0 on a Linux installation where the environment is set to use UTF-8, you must add a module 'utf8' on the modules tab. This is the equivalent of 'perlapp --add utf8'. This does not affect Perl 5.6.x or future versions of Perl 5.8.1 or higher. (Bug 26898)
On Windows, some interactive commands may not work properly when run from the Command Output tab of the Output Pane. You must run these commands in a separate shell. (Bug 23176)
Perforce client version 2001.1 and previous for Windows is known to hang when used for Komodo's Perforce integration. Upgrading to the most recent version of Perforce is known to fix the problem. (Bug 19959)
The Output tab cuts off lines at 250 characters. (Bug 20711)
Macros will not record certain commands, including (but possibly not limited to) 'Ctrl'+'Shift'+'B'|'R'|'E'|'D' (toggle toolbars or button text), 'Ctrl'+'Shift'+'N' (new default file), and View as Language menu items.
If you are using the Pop-Up Stopper ad-blocking program (Pop-Up Zapper on OS X), it will close the Rx Toolkit window immediately after it is opened. (Bug 21768)
When you schedule a new file to be added using CVS, CVS will not permit you to remove the file from the repository using the "revert changes" command. (Bug 27192)
Users of the Japanese version of Windows XP may experience difficulties in starting Komodo.
The Open field in the Open/Find Toolbar does not automatically display a drop-down list of directories when an UNC path is typed. Currently, the list is only displayed when a the path includes a subdirectory. (Bug 29011)
When creating a "diff" in Komodo (Tools|Compare Files), the line endings of the files are normalized to Unix style line endings. Lines in files that have different line endings are not displayed differently in the diff (unless other differences are present), but a warning is provided to the user in the 'diff' window, or the 'no difference' dialog. (Bug 32932)
In Komodo's Rx Toolkit, the match offsets for Unicode or high-bit data are incorrect. When matching, the program does not account for UTF-8 multi-byte characters. (Bug 33287)
When adding new key bindings via the Preferences dialog box, Komodo displays a message indicating that the key bindings will not take effect until Komodo is restarted. However, some changes do take effect immediately.(Bug 36710)
If you rename a folder that was added to a custom menu, the name is changed in Komodo's Toolbox but not on the menu itself. A workaround is to move the renamed folder out and then back into the associated custom menu icon in the Toolbox. (Bug 36679)
A newly created custom menu is added to the Toolbox but is not immediately displayed alongside existing toolbars. Restarting Komodo causes the new toolbar to display. (Bug 40078)