Working with Plugins
offers several plugins. There are two types of these plugins: some are written in native C++, while others are written in the Python programming language. There are subtle differences in these, described below.
You can enable any type of plugin in the configuration dialog, which also provides access to additional configuration options for plugins that require it.

Application Plugins
plugins are additional functions for the editor. They can add extra menus and shortcuts, and extend 's features. You can install as many or as few as you like, from within . Open 's configuration dialog with Settings Configure ... Select Application Plugins to choose the wanted plugins.
The available application plugins are:
Backtrace Browser - Backtrace navigation tool view
Build Plugin - Compile or Make and parse error messages
Close Except/Like - Close group of documents based on a common path or file extension
CTags - Look up definitions/declarations with CTags
Document preview - Preview the document in the target format.
Document switcher - Quick document switching with behavior
File system browser - File system browser tool view
Documents - Displays the open files in a file tree
Plugin - Provides a simple frontend
Lumen - Lumen is a Autocompletion Plugin for D, using the DCD autocompletion server
Open Header - Opens the corresponding .h/[.cpp|.c] file
Project Plugin - Project plugin for kate
Replicode
Rust code completion - Code completion for Rust source code
Search & Replace - Search or replace patterns in opened documents or in files on disk
Snippets tool view - Tool view embedding the snippets management
SQL Plugin - Execute query on SQL databases
Symbol Viewer - Extract and show reference symbols from source
Terminal tool view - Tool view embedding a terminal widget
Text Filter - Easy text filtering
Completetion - Lists elements, attributes, attribute values and entities allowed by DTD
Validation- Validates files using xmllint

Backtrace Browser Plugin

Using the Backtrace Browser Plugin
This plugin is meant for developers and probably of little use for users. It shows a backtrace delivered by gdb in a listview in a toolview. Clicking on an item opens the selected file and jumps to the correct line number. It works for backtraces generated on your own machine, but it will also work for backtraces from other people, with /home/dummy/qt-copy/…/qwidget.cpp will still be found on other machines. For that to work, you have to index the directories where the source code is located.
Sometimes there are several files with the same name, ⪚
kdegraphics/okular/generators/dvi/config.h
kdepim-runtime/resources/gmail/saslplugin/config.h
To pick the right choice, the plugin picks the last two parts of the url, in this case this would be
dvi/config.h
saslplugin/config.h
And then usually the plugin finds the correct one.
Indexing master and a branches of course will lead to a clash.

Configuration
On the configuration page add the directories containing the source code.
Backtrace Browser
Configure Paths in Backtrace browser tool view
Clicking OK will start indexing. When indexing is finished, open the toolview Backtrace Browser.
Now you can load a backtrace from the clipboard (⪚, when you clicked Copy to Clipboard in DrKonqi) or from a file.

Build Plugin

Introduction
The Build plugin allows you to run actions like build, clean and compile on a project.

Using the Build Plugin
The Build plugin adds a Build Output tool view at the bottom and a Build menu on the menubar. The tool view can be used to configure build target settings, while the menu can be used to perform build, clean and compile actions.
Build Output
The Build Output tool view has two tabs:
Target Settings
Output

Target Settings tab
The target settings tab can be used to configure various build targets and define targets sets.
To change the names or commands double click on the entries in the table and use the dropdown box to select the active target set. Use the checkbox in front of each target to define a default.
A new target set contains several configuration options:
Working Directory 	You can set the path to the project here. Leave this empty to use the directory the current document is located in.
Build 	This option lets you define the build command. It is set to make by default.
Clean 	The option lets you define the clean command. It is set to make clean by default.
Config 	This option lets you define the config command. It is set to cmake -DCMAKE_BUILD_TYPE=Debug -DCMAKE_INSTALL_PREFIX=/usr/local ../ by default.
On the top this plugin has a toolbar with the following buttons :
Build the selected target
Add a new build target
Create a new build target set
Copy a command or target set
Delete the current command or target set

Output tab
The Output tab shows the console output generated by the last command.
Use the slider at the top to show or hide categories of output:
Full Output, Parsed Output, Errors and Warnings or Only Errors
Each line contains a message and the file name and line number if available. Clicking on the error or warning takes you to the appropriate file and places the cursor on the corresponding line number.
To navigate to the previous error, press . To navigate to the next error, press .

Menu Structure
Build Select Target 	Select from a list of targets configured by the user.
Build Build Default Target 	Builds the target defined as default in the active target set.
Build Build Previous Target 	Switch to the previous target configured by the user.
Build Stop 	Stop building a target.
Left Build Previous Error 	Moves the cursor to the location of the previous error in the document.
Right Build Next Error 	Moves the cursor to the location of the next error in the document.

Thanks and Acknowledgments
The Build Plugin was written by Kåre Särs.
Special thanks to Google Code-In 2011 participant Salma Sultana for writing much of this section.

Close Except/Like Plugin

Introduction
This plugin allows you to close a group of documents based on their extension and path.

Using the Close Except/Like Plugin
Assumed you have these documents opened in :
/tmp/subfolder/test.h
/tmp/test.cpp
/tmp/test.txt
Then you have the following options to close documents as displayed in the screenshot:
Close Except
Use the checkbox in the last item of the list to enable or disable a confirmation dialog. The selected option will be applied to both close actions.

Menu Structure
File Close Except 	 Close all open documents, except those which match the path or file extension selected from the submenu.
File Close Like 	 Close all open documents which match the path or file extension selected from the submenu.

CTags Plugin

Introduction
CTags generates an index (or tag) file of language objects found in source files that allows these items to be quickly and easily located using this plugin in .
A tag signifies a language object for which an index entry is available (or, alternatively, the index entry created for that object).
Tag generation is supported for these programming languages.

Configuration
The CTags plugin uses two different database files for the index.
On the CTags settings page in 's configuration you can add or remove directories containing the source code and regenerate the common CTags database.

Common Index
CTags Settings
Configure CTags Global Database
At the bottom of the settings page you can adapt the CTags command.
For more information about all available options please read the CTags man page. This man page is available in and you can also enter the man/:ctags directly into
Clicking Update will start indexing. When indexing is finished, close the dialog.

Session Index
To configure the session index open the CTags view.
Index Targets 	 On this tab you can add or remove directories containing the source code and manually regenerate the session specific CTags database.
Database 	 Database Settings
Configure CTags Session Database
Select another CTags database file, configure the CTags command or revert to the default command.

Using the CTags Plugin
You place the mouse cursor on the language object like function, symbol that you are interested in and then select one of the actions in the CTags menu to jump to the line and file where the object is defined or declared.
By default the actions in the CTags menu have no shortcuts assigned. Use the keyboard shortcut editor to configure your own shortcuts.
Alternatively use the search field on the Lookup tab of the CTags view.
Entering characters into the search field will start the search and display matching names of language objects like functions, classes, symbols together with type and filename.
Select an item in the list to jump to the corresponding line in the source file.

Menu Structure
CTags Jump back one step 	 Navigate back in the history to the last visited tag.
CTags Lookup Current Text 	 Opens the Lookup tab of the CTags view and displays all language objects matching the current text selection in the list.
CTags Go to Declaration 	 If the cursor is in a definition object this will open the document containing the corresponding declaration if needed, activate its view and place the cursor at the start of the declaration.
CTags Go to Definition 	 If the cursor is in a declaration object this will open the document containing the corresponding definition if needed, activate its view and place the cursor at the start of the definition.

Document Preview Plugin

Introduction
The plugin enables a live preview of the currently edited text document in the final format in the sidebar. So when editing ⪚ a Markdown text or an SVG image, the result is instantly visible next to the source text.
For the display the plugin uses that KParts plugin which is currently selected as the preferred one for the type of the document. If there is no KParts plugin for that type, no preview is possible.
To change the preferred plugin open the File Associations module in the and edit the Services Preference Order on the Embedding tab.

Some available KParts plugins
type	KParts plugin
Markdown text	KMarkdownWebViewPart or OkularPart
SVG image	SVGPart
UI files	KUIViewerPart
Dot graph files	KGraphviewerPart

Menu Structure
View Tool Views Show Preview 	 Toggle the display of 's Document preview in a sidebar.

Interface
The buttons at the top of the preview window provide these actions:
Lock the preview to a given document. Selecting this option ensures that if switching the focus to the view of another document in the same window, the preview will not follow to that document, but keep previewing this document.
Enable or disable updates of the preview of the current document content
Manually update the preview of the current document content
A dropdown menu with actions from the KParts plugin

Document Switcher Plugin

Menu Structure
View Last Used Views 	 View Last Used Views (Reverse) 	 Opens a list with the last viewed documents:
Last viewed documents
Keep the key pressed and use the key to cycle forward through the list. Additionally press the key to reverse the direction.
Keep the shortcut pressed and can use the , , or keys to navigate in the list. Pressing a char key consecutively will cycle through all items with the first matching in the list. If you release the shortcut keys the view will switch to the selected document in the list.

Filesystem Browser
The Filesystem Browser is a folder viewer, allowing you to open files from a displayed folder in the current frame.

Menu Structure
View Tool Views Show Filesystem Browser 	 Toggle the display of 's Filesystem Browser.

Interface
From the top down, the Filesystem Browser consists of the following elements:
A Toolbar 	 This contains standard navigations tool buttons:
Back 	Causes the folder view to cd to the previously displayed folder in the history. This button is disabled, if there is no previous item.
Forward 	Causes the folder view to cd to the next folder in the history. This button is disabled, if there is no next folder.
Bookmarks 	Opens a submenu to edit or add bookmarks and to add a new bookmark folder.
Current Document Folder 	This button will cause the folder view to cd to the folder of the currently active document if possible. This button is disabled, if the active document is a new, unsaved file, or the folder in which it resides can not be decided.
Options 	
Short View 	Displays only the filenames.
Detailed View 	Displays Name, Date and Size of the files.
Tree View 	Like Short View, but folders can be expanded to view their contents.
Detailed Tree View 	This also allows folders to be expanded, but displays the additional columns available in Detailed View.
Show Hidden Files 	Displays files normally hidden by your .
Automatically synchronize with current document 	When this option is enabled the filesystem browser will automatically cd to the folder of the document currently open in the editing area every time it changes.
A Location Entry 	 This displays a breadcrumb navigation to the currently open folder, similarly to . You can click on a any folder to browse to it, or click on one of the arrows to the left of a folder to select any folders beneath it. You may also select from your list of Places by clicking the leftmost icon in the breadcrumb navigation, which displays an icon that represents your current Place.
You can also click to the right of the breadcrumbs to change them to a text box where you can type the path of a folder to browse. The entry maintains a list of previously typed paths. To choose one, use the arrow button to the right of the entry.
The entry has folder auto-completion. The completion method can be set using the menu of the text entry.
A Folder View 	This is a standard folder view.
A Filter Entry 	 The Filter entry allows you to enter a filter for the files displayed in the folder view. The filter uses standard globs; patterns must be separated by white space. Example: *.cpp *.h *.moc
To display all files, enter a single asterisk *.
The filter entry saves the last 10 filters entered between sessions. To use one, press the arrow button on the right of the entry and select the desired filter string. You can disable the filter by pressing the Clear text button to the left of the autocompletion arrow button.

Configuration
This plugin can be configured on the Filesystem Browser page of 's configuration.
Toolbar 	Configure the buttons on the Filesystem Browser toolbar by moving the ones you want enabled to the Selected Actions list, and order them using the arrow buttons at the side of the list.

The Documents List

Introduction
The documents list displays a list of all documents currently open in . Modified files will have a small floppy disk icon on their left to indicate that state.
On the top the Documents list has a toolbar with the following buttons:
Create new document
Open an existing document
Previous Document
Next Document
Save the current document
Save the current document under a new name
By default, the Documents list appears in Tree Mode, which displays the folder structure surrounding all currently open documents. Also available is List Mode, which displays a simple list of all open documents. You can switch modes by right-clicking on the list and selecting from the View Mode menu.
If two or more files with the same name (located in different folders) are open in List Mode, the names of the second will be prepended (2) and so on. The tool-tip for the file will display its full name including the path, allowing you to choose the desired one.
To display a document in the currently active frame, click the document name in the list.
The context menu has some common actions from the File menu.
Additionally there are filemanager actions to rename or delete the file. With Copy Filename you can copy the full path of the document to the clipboard.
You can sort the list in a few different ways by right clicking the list and selecting from the Sort By menu. The options are:
Document Name 	Lists the documents alphabetically by their name.
Document Path 	Lists the documents alphabetically by the path to them.
Opening Order 	Lists the documents in the order of opening.
The document list will per default visualize your history by shading the entries for the most recent documents with a background color. If the document was edited, an extra color is blended in. The most recent document has the strongest color, so that you can easily find the documents you are working on. This feature can be disabled in the Documents page of the configuration dialog.
The default location of the document list in the window is to the left of the editing area.

Menu Structure
View Previous Document 	 Opens the document displayed above the currently open document in the Documents list.
View Next Document 	 Opens the document displayed below the currently open document in the Documents list.
View Show Active 	 Displays the currently open document in the Documents list.

Configuration
Background Shading 	This section allows you to enable or disable the background shading visualization of your recent activity, and choose which colors to use if enabled.
Sort By 	Set how you want the document list sorted. This can be set from the menu in the document list as well.
View Mode 	This provides two options that effect the display of the Documents tool view. The Tree View option will display the documents in a tree underneath the folders they are in, while the List View option will display a flat list of documents.
Show Full Path 	When Tree View and this option are enabled, the folder entries displayed in the Documents tool view will display the full filesystem path to the folder in addition to the name of the folder. It has no effect in List View.

Plugin

Introduction
's plugin provides a simple frontend to the popular Project Debugger.
Previous experience with is strongly recommended. For more information on using , visit the website.
You can enable the plugin in the Plugins section of 's configuration.
For the plugin to work properly, you must have a source file (of any type supported by ) and an executable.
If you compile using /g++ you might want to use the -ggdb command line argument.
After these preparations are made, open the source file in , enter the path to the executable in the Settings tab of the Debug View tool view, and select Debug Start Debugging from the menu to get started.

Menu and Toolbar Structure
All of these options are available in 's menus, and many are available on the Debug toolbar as well.
View Tool View Show Debug View 	Shows a tool view containing output, the command line used, and other settings.
View Tool View Show Locals and Stack 	Shows a list of all currently loaded variables and their values and a backtrace.
Debug Targets 	A submenu containing a list of targets (executables).
Debug Start Debugging 	Starts with a target.
Debug Kill / Stop Debugging 	Stops .
Debug Restart Debugging 	Restarts .
Debug Toggle Breakpoint / Break 	Set a breakpoint at the current cursor position.
Debug Step In 	Execute the present statement (function call will be debugged).
Debug Step Over 	Execute the present statement (function call will not be debugged).
Debug Step Out 	Resumes execution until the program that is executing terminates.
Debug Move PC 	Move program counter (next execution).
Debug Run To Cursor 	Runs the program until it reaches current cursor position.
Debug Continue 	Ignores any breakpoints and executes program until it terminates (successfully or not).
Debug Print Value 	Prints the value of the variable that the cursor is currently pointing to.
Settings Toolbars Shown Plugin 	Display the debugging toolbar.

Debug View
The Debug View tool view consists of several tabs:
Output 	 Contains output from and a command line.
The Output Tab
The Output tab.
The Output tab displaying the output from a debugging session.
Settings 	
Executable 	Path to the target (executable) for debugging.
Working Directory 	The current working directory provided to the target.
Arguments 	Arguments passed to the program.
Keep focus 	Keeps focus on the command line.
Redirect IO 	Opens a new IO tab in the Debug View where you can view output and provide input to the running program.
The Settings dialog
The Settings dialog
The Settings dialog displaying the configuration of a debugging session.
IO 	 Contains an area that displays output from the running program and a command line where you may provide input to it.
The IO Tab
The IO tab.
The IO tab displaying output from a simple test program.

Call Stack and Locals
The Call Stack tool view contains a list of the formatted backtrace returned from .
The Call Stack Tool View
The Call Stack tool view.
The Plugin's Call Stack tool view.
The Locals tool view contains a list of all currently loaded variables from the program and their corresponding values.
The Locals Tool View
The Locals tool view.
The Plugin's Locals tool view.

Thanks and Acknowledgments
Special thanks to Google Code-In 2011 participant Martin Gergov for writing much of this section.

Lumen Plugin
Lumen is a plugin providing code-completion for the D programming language. It is just a connection between the editor and the D Completion Daemon (a server providing all the information) called DCD. The plugin currently supports all major features of the completion server: feeding the server with import files, displaying documentation and several types of completion:
Imports:
Imports
Basic Completion:
Basic Completion
Completion (overloaded Function):
Completion (overloaded Function)
Calltips:
Calltips
To make Lumen work you have to install DCD, using the information provided by the D community.
After installing DCD edit ~/.config/dcd/dcd.conf (create if it does not exist already) and add a path to your D include/import files ⪚ /usr/include/dlang/dmd or /usr/include/d.
Furthermore Lumen will try to read a .lumenconfig in every parent folder of the currently opened D source file and add every line in this file as include path to the DCD server. Add all dependencies of your current project to this file.
Now start the completion server with dcd-server, enable the Lumen plugin in your settings and you will have code completion for the D programming language in

Open Header Plugin

Using the Open Header Plugin
When editing C or C++ code, this command will switch between a header file and its corresponding C/C++ file or vice versa.
For example, if you are editing myclass.cpp, this action will change to myclass.h if this file is available in the same folder.
Pairs of the following filename extensions will work:
Header files: h, H, hh, hpp
Source files: c, cpp, cc, cp, cxx

Menu Structure
F12 File Open .h/.cpp/.c 	 Open the corresponding header or source files for the active document.

Project Plugin

Introduction
The basic idea of the Project plugin is to have a structured list of files belonging to the project with the following properties:
Provide a structured view of the files
Make it easy and very fast to open and switch projects
Support search and replace for a project
Provide simple auto completion
Make it simple to quickly open files in the project
Support for building the project

Structured View of the Files
Once the Project plugin is loaded in the configuration page, open a file in a project and a sidebar appears that lists all projects as well as the project files as follows:
Project View
As you can see, the currently active project is Kate, and its contents is listed in the tree view. Clicking on files in the tree view opens the file in the editor. Further, a context menu is provided with which you can open files with other applications, such as a .ui file with Qt Designer.
You can filter the items by typing parts of the file name you are looking for into the search bar at the bottom of the list.

Switching Projects
The idea is that you never have to open a project manually, this is even not supported at all. Hence, what happens if you open a file, the Project plugin quickly scans the folder and its parent folders for a .kateproject file. If found, the project is automatically loaded.
Furthermore, if you open another document in , that belongs to another project, the Project plugin automatically switches the current project. So intuitively, always the correct project is active. Of course, you can also switch the currently active project using the combo box.

Search and Replace in Projects
has a Search and Replace plugin that shows up in the bottom sidebar. If a project is loaded, open the Search and Replace sidebar, and switch to the mode to search and replace in the current project:
Search in Projects

Simple Auto Completion
With the knowledge of all files belonging to a project, the Project plugin provides simple auto completion facilities based on CTags. If a project is initially opened, CTags parses all project files in a background thread and saves the CTags information to /tmp. This file then is used to populate the auto completion popup in .
In contrast, without this auto completion, is only capable of showing auto completion items based on the words in the current file. So the auto completion provided by the Project plugin is much more powerful.
Completion in Projects
If CTags is missing, a passive popup warns you about this issue. It is also noteworthy, that the CTags file in /tmp is cleaned up when exits, so the plugin does not pollute any folder with unwanted files.

Quick Opening Files
As clicking on files in the tree view is not the fastest way to open a file, provides a built-in quick open mechanism you can activate with O. What you the get is a list like this:
Quick Open
You can filter by typing parts of the file name you are looking for, and you can also navigate with the arrow keys and page up/down through the list. Hitting activates the selected file, while hides the quick open view again.
Further, the quick open remembers the previous file. So when you change to the quick open view the previously activated file is automatically selected and you just need to hit , which comes very handy at times.

Support for Building the Project
Another feature is to have support for the Build Plugin, so that it automatically is configured correctly.

Creating Projects

Loading Projects Automatically
The Project plugin has an auto-loading feature. You can read the file list from the version control system. To this end, auto-loading for the respective version control system needs to be enabled in the settings (enabled by default):
Project Plugin Configuration

Creating Projects Manually
You just have to create a .kateproject file in the root folder of the project. For instance, the Kate .kateproject file looks like this:

{
  "name": "Kate"
, "files": [ { "git": 1 } ]
}

The file content is written in JSON syntax. The project name is Kate, and the files contained in should be read from git.
Also supported instead of git is subversion through svn and mercurial through hg. If you do not want to read from a version control system, you can tell it to recursively load files from directories as follows:

{
  "name": "Kate"
, "files": [ { "directory": "kate", "filters": ["*.cpp", "*.h", "*.ui", "CMakeLists.txt", "Find*.cmake"], "recursive": 1 } ]
}

Here, subfolders and filters define what’s part of the project. You can also mix version control and files based on filters.
If you want to add support for the Build plugin, you could write a .kateproject like this:

{
  "name": "Kate"
, "files": [ { "git": 1 } ]
, "build": {
    "directory": "build"
  , "build": "make all"
  , "clean": "make clean"
  , "install": "make install"
  }
}

Current Project
Using 1 Projects Go To you can open the Current Project view at the bottom of the editor window with four tabs:
Current Project
Terminal 	 A Terminal emulator starting in the root folder of the project.
Code Index 	 Entering characters into the search bar will start the search and display matching names of functions, classes, symbols together with kind, filename and line number.
Select an item in the list to jump to the corresponding line in the source file.
Code Analysis 	 Click Start Analysis to run a static code analysis for the C and C++ using cppcheck and to generate a report showing filename, line number, severity (style, warning ) and the issue found.
Select an item in the list to jump to the corresponding line in the source file.
Notes 	 Text entered in this tab will be saved in the file projectname.kateproject.notes.

The Projects Menu
The Projects menu allows you to switch between currently open projects. It is displayed by the Project plugin.
Projects Back 	 Switch to the previous project.
Projects Forward 	 Switch to the next project.
1 Projects Go To 	 Open the Current Project view at the bottom of the editor window.

Rust code completion Plugin
This plugin provides code completion for the Rust programming language.
Once you have enabled the Rust code completion item in the plugin page, a new page will appear in your configuration dialog.
Rust Configuration
Edit the command to run Racer, an utility intended to provide Rust code completion for editors.
You also need the Rust source code and have to provide the path to the source tree.
While typing code a popup list appears with items for completion:
Rust Completion
In addition to code completion popups, the plugin also installs a Go to Definition action in the Edit menu and in the context menu. You can configure a keyboard shortcut for it as well.
This action will open the document containing the definition if needed, activate its view and place the cursor at the start of the definition.

Search & Replace

Introduction
's Search & Replace plugin allows you to search for text or regular expressions in many different files at once. You can search all open files, all the files in one directory and optionally its subdirectories, or in the active file. You can even filter by filename, for instance searching only files that end with a particular file extension.

Interface

Search Query
The following options are always displayed at the top of the Search in Files tool view:
	 You can have as many searches as you want open at the same time. Simply click the new tab button at the top-left corner of the Search tool view and a new results tab will open permitting you to perform another search.
	 The button in the top right-corner of the Search in Files tool view will toggle the bottom half of the tool view between displaying additional options for the Search in Folder mode and the results of your search.
Find 	 This is where you type in what you want to find. You may enter standard text, or a regular expression if enabled.
Replace (text box) 	 Replacement text that will be added to file(s) in place of the text in the Find text box.
Search 	 When you've finished configuring everything, just press the Search button to perform your search. You may also press in the Find text box to do the same.
Replace 	 When you've finished configuring everything, just press the Replace button to replace the text entered in the Find text box with that of the Replace text box. You may also press in the Replace text box to do the same.
Next 	 Go to the next match of your search query, switching files if necessary.
Replace Checked 	 The same as Replace, but will only perform replacements in files that are checked in the pane below.

Search in Folder Options
These options are displayed below the aforementioned query options. If search results are being displayed instead, press the button to display them.
Search in 	 This has three options. Select Open Files to search all files currently open in . Select Folder to search inside a folder and optionally its subfolders. Select Current File to search only in the active file.
If the Projects plugin is loaded, you can also search in the Current Project or in All Open Projects.
Match case 	 Restricts search results to only those that have the exact same combination of upper and lower case letters as your search query.
Regular expressions 	 Permits you to use regular expressions instead of simple text as your search query.
Expand results 	 Display all the results found in each file, instead of just a list of files that contain the search query.
Folder 	 You may enter the path of the folder you wish to search. For instance, you might enter ~/development/kde/kate/ if you wished to search the source code. This option is only available when using in Folder mode.
Open file dialog 	 Press this button to locate the folder in your desktop's folder browser. This button only works when using Folder mode.
	 Press this button to change Folder to the parent of the currently selected folder. This button only works when using Folder mode.
	 This button will set the Folder entry to the folder in which the currently open document is located. This button only works when using Folder mode.
Filter 	 This permits you to only search filenames that match a particular pattern. For instance, to only search files written in C++, change it to *.cpp. To search only files beginning with kate, change it to kate*. You can enter multiple filters separated with a comma (,). This option is not available when using Open files mode.
Exclude 	 The opposite of Filter, this prevents from searching files that match the specified patterns. As with Filter, you can enter multiple patterns separated with a comma (,). This option is not available when using Open files mode.
Recursive 	 If this option is enabled, will also search in all subfolders of the selected folder. This option is only available when using Folder mode.
Include hidden 	 If this option is enabled, will also search in files or folders that are typically hidden by your . This option is only available when using Folder mode.
Follow symbolic links 	 The Search in Files plugin typically does not follow symbolic links. When this option is enabled, the plugin will follow them instead and search inside the files or folders they reference. This option is only available when using Folder mode.
It's possible for symbolic links to reference a folder that is the parent of the folder currently being searched, or other folders that contain symbolic links to their parent. If there is such a link in the folder being searched and this option is enabled, will repeatedly follow the link and search the folder, and the search will never complete.
Include binary files 	 If enabled, will also search in files that do not appear to be text files.

Search Results
The results of your search are displayed below the query options. If options for Search in Folder mode are displayed, simply press the button to display them. They will also automatically be displayed as soon as a search is performed.
The search results display a list of files that contains text that matches your search query, followed by the number of matches found in that file.
To see a list of matches in that file, simply click the expansion arrow to the left of the file name. (If you selected the Expand results option, this will already be done for you.) The line number each match is found on will be displayed, followed by the contents of that line, with your search query indicated in bold text.
To open the file your result was found in, simply double-click it. will open the file if needed. You can also move the cursor to the location of a particular match by double-clicking on its listing instead of the file name.

Menu Structure
F Edit Search in Files 	 Launches the Search and Replace tool view.
Edit Go to Next Match 	 Go to the next match in a search performed by the Search and Replace plugin.
Edit Go to Previous Match 	 Go to the previous match in a search performed by the Search and Replace plugin.
View Tool Views Show Search and Replace 	 Toggle the display of 's Search and Replace tool.

Kate Snippets

Introduction
Kate Snippets is a plugin used to save you some time by adding support for so-called snippets (re-usable source code, machine code or text). The plugin also supports code completion and JavaScript.

Menu Structure
View Tool Views Show Snippets 	Shows snippets panel containing all snippets in your repository that are for the currently opened file type.
Tools Create Snippet 	 Create a new snippet, which is a reusable chunk of text you may insert in any part of any document.

Snippets panel
Kate Snippets Panel
The snippets panel.
The panel for Snippets.
In the panel you should see a list of snippet repositories, along with options to create your own, get them from the Internet or load them from a local file. Each repository has a checkbox that can be used to activate or deactivate it. There are also buttons to edit and delete existing repositories.

Loading Snippet Repository Files
You can download snippet repositories from the Internet. Just click Get New Snippets and a window with a list of snippet repositories will open. After downloading the desired snippet, make sure that you have activated it.

Creating and Editing Repositories
To create a new snippet repository, click Add Repository. You should now see a dialog that asks for the name of the snippet file, license and author. After choosing the desired options, click OK.
Snippet Editor
The repository editor.
The repository editor interface.
The snippet repository editor contains the following options:
Name 	Appears in the list of snippets in the tool view and is also searched when using the code completion feature.
Namespace 	Prefix used while using code completion.
License 	Select the license for you snippet repository.
Authors 	Enter the name(s) of the author(s) of the snippet file.
File types 	Select the file type(s) you want the snippet repository to apply to. It is set to by default, so the repository applies to all files. You can change it to something like C++ for instance, or select from a list by clicking on the items. You can specify more than one file type pressing the while adding types.

Creating and Editing Snippets
Snippet Editor
The snippet editor.
The snippet editor interface.
Name 	The name will be shown in the completion list.
Shortcut 	Pressing this shortcut will insert the snippet into the document.
Snippets 	The text your snippet will insert into the document.
A snippet can contain editable fields. They can be cycled by pressing . The following expressions can be used in the template text to create fields:
${field_name} creates a simple, editable field. All subsequent occurrences of the same field_name create fields which mirror the contents of the first during editing.
${field_name=default} can be used to specify a default value for the field. default can be any JavaScript expression.
Use ${field_name=text} to specify a fixed string as default value.
${func(other_field1, other_field2, ...)} can be used to create a field which evaluates a JavaScript function on each edit and contains its contents. See the Scripts tab for more information.
${cursor} can be used to mark the end position of the cursor after everything else was filled in.
Scripts 	JavaScript helper functions to use in your snippets.
All JavaScript functions should return the contents you want to place in a template field as a string.
Functions are called in a scope which contains the contents of all editable template fields as local variables. For example in a snippet containing ${field}, a variable called field will be present which contains the up-to-date contents of the template field. Those variables can either be used in the function statically or passed as arguments, by using the ${func(field)} or ${field2=func(field)} syntax in the snippet string.
You can use the scripting API to get the selected text, full text, file name and more by using the appropriate methods of the document and view objects. Refer to the scripting API documentation for more information

Using Snippets
Kate Snippets in Action
Accessing Snippets from a tool view and a drop down menu.
Selecting from a list of snippets.
You can call snippets in two ways:
By choosing the snippet from the tool view.
While writing, you can press Space, which will display all the snippets in a convenient window from which you can choose. This key combination provides functionality similar to code completion.
If the snippet contains variables (besides ${cursor}) the cursor will automatically go to the first occurrence of a variable and will wait for you to write something. When you are done, you can press to move to the next variable, and so on.

Thanks and Acknowledgments
Snippets was written by Joseph Wenninger.
Special thanks to Google Code-In 2011 participant Martin Gergov for writing much of this section.

SQL Plugin

Introduction
The Structured Query Language (SQL) is a specialized language for updating, deleting, and requesting information from databases.
The SQL Plugin allows you to:
Create a database
Connect to existing databases
Insert and delete data in the database
Execute queries
Display results in a table

Connecting to a Database
Select Add Connection from the SQL menu or toolbar, and then select the Qt database driver you want to use (including QSQLITE, QMYSQL3, QMYSQL, QODBC3, QODBC, QPSQL7, and QPSQL). If you can't see the desired driver, you need to install it. Then, press Next.
If the database you selected uses a file, simply indicate the database's location and press the Next button. If it requires connecting to a server, you must enter the hostname of the server, your username and password, and any other information that particular driver may require. Then press Next.
Finally, give a name to your connection, and press Finish.

Running Queries

INSERT/DELETE/UPDATE
You can insert, delete, and update data using the SQL plugin just as you would from the command line or from within a program. Simply enter a query and press the Run query button in the toolbar or use SQL Run query (E).

Some Example Queries
INSERT 	

INSERT INTO table_name ("feature1", "feature2", "feature3", "feature4", "feature5")
VALUES ("value1", "value2", "value3", "value4", "value5" )

DELETE 	

DELETE FROM table_name WHERE name = "text"

UPDATE 	

UPDATE table_name SET "feature1" = "text", "feature2" = "text", "feature3" = "text", "feature4" = "text", "feature5" = "text"

SELECT
After running a SELECT query, you can view the results as a table that will appear in the SQL Data Output tool view at the bottom of , or as text in the SQL Text Output. If there is an error, you can see it in the text output.

Example SELECT Query

SELECT * FROM table_name

In the SQL Data Output tool view, there are several buttons:
Resize columns to contents 	Changes the size of columns to fit their contents.
Resize rows to contents 	Changes the size of rows to fit their contents.
Copy 	Selects all of the table contents and copies it to the clipboard buffer.
Export 	Exports all of the table contents to a file, the clipboard, or the current document in the Comma Separated Values format.
Clear 	Removes everything from the table view
You can now change the colors displayed in the table in the SQL section of Settings Configure .

Browsing
You can browse your database using the Database schema browser tool view on the left. The information displayed varies depending on which database driver you are using.
To refresh this list, right-click anywhere in the tool view and select Refresh. To generate a query on any entry in the list, right-click on an entry, select Generate, and select the query type (SELECT, UPDATE, INSERT, or DELETE) from the submenu that appears.

Menu Structure
SQL Add connection... 	 Adds a new connection using any database driver.
SQL Remove connection 	 Removes the selected connection.
SQL Edit connection... 	 Edits the current connection's settings.
Connections 	 All database connections you have created are listed between the Edit connection and Run query menu items. Select one to run queries or make modifications to it.
E SQL Run query 	 Runs your query.

Thanks and Acknowledgments
The SQL Plugin was written by Marco Mentasti.
Special thanks to Google Code-In 2011 participant Ömer Faruk ORUÇ for writing much of this section.

Symbol Viewer Plugin

Using the Close Except/Like Plugin
It allows developers to view symbols (functions, macros and structures) from source code.
By clicking the parsed information you can easily browse the code.
At the moment the following languages are supported:
C/C++, Java, Perl, PHP, Python, Ruby, XSLT, Tcl/Tk, Fortran
Feature list:
List/Tree mode
Enable/disable sorting
Hide/Show Functions Parameters
Expand/collapse tree mode
Auto-update on document change
Code parsing is based on the Syntax-Highlighting framework from

Menu Structure
\ View Tool Views Show Symbol List 	 Toggle the display of 's Symbol List displaying Functions, Macros and Structures of the source code in the active document.

Configuration
Symbol Viewer
Choose the default parser options

Terminal Tool View Plugin
The built in Terminal Emulator is a copy of the terminal application, for your convenience. It is available from the View Tool Views Show Terminal menu item and will get the focus whenever displayed. Additionally, if the Automatically synchronize the terminal with the current document when possible option is enabled, it will change to the directory of the current document if possible when it is displayed, or when the current document changes.
The default location in the window is at the bottom, below the editing area.
You can configure the using its menu, for more information, see the manual.
The built-in terminal emulator is provided by the Terminal Tool View plugin.

Menu Structure
View Tool Views Show Terminal 	 Toggles the display of the built-in terminal emulator.
When activated for the first time, the terminal will be created.
When the terminal emulator is displayed, it will get the focus, so that you can start typing in commands immediately. If the Automatically synchronize the terminal with the current document when possible option is enabled in the Terminal page of the Main configuration dialog the shell session will change to the directory of the active document, if it is a local file.
Tools Pipe to Terminal 	Feed the currently selected text into the built-in terminal emulator. No newline is added after the text.
Tools Synchronize Terminal with Current Document 	 This will cause the built-in Terminal to cd into the directory of the active document.
Alternatively, you can configure to always keep the terminal in sync with the current document. See Configuration for more information.
Tools Focus/Defocus Terminal 	 Switch the focus from the current document to the terminal and vice versa.

Configuration
You can configure the Terminal Tool View plugin on the Terminal page of the configuration dialog.
The following options are available:
Automatically synchronize the terminal with the current document when possible 	This will cause the built-in terminal to cd into the directory of the active document when launched and when a new document gets the focus. If not enabled, you have to do all your navigation in the terminal on your own.
Set EDITOR environment variable to 'kate -b' 	This sets the EDITOR environment variable so programs run in the built-in terminal that automatically open a file in an editor will open them in instead of the default editor configured in your shell. You will not be able to continue using the terminal until you have closed the file in , so the calling program is aware you have finished editing the file.

Text Filter Plugin

Using the Text Filter Plugin
You can use this plugin to execute shell commands. A selection will be used as argument for the shell command, the output will either replace the selection or copied to the clipboard.

Examples:
less /etc/fstab - paste the contents of this file or copy it to the clipboard
wc - count lines, words and characters of the selection and paste this into the document or copy it to the clipboard
sort - sort lines of the selection and paste the result into the document or copy it to the clipboard

Menu Structure
\ Tools Filter Text 	 Opens the Text Filter dialog:
Text Filter dialog
Enter the shell command into the combobox or select a previous command from the history.
Copy the result instead of pasting it 	 Copy the result to clipboard leaving a document unchanged.
Merge STDOUT and STDERR 	 If checked, an output from STDOUT and STDERR will be merged and no errors will be reported. Otherwise, STDERR will be displayed as a passive message.

Validation
This plugin checks files for validity and being well-formed.
This plugin checks the current file. A list of warnings and errors will appear at the bottom of 's main window. You can click on an error message to jump to the corresponding place in the file. If the file has a DOCTYPE the DTD given with this doctype will be used to check the file for validity. The DTD is expected at a position relative to the current file, ⪚ if the doctype refers to DTD/xhtml1-transitional.dtd and the file is /home/peter/test.xml the DTD is expected to be located at /home/peter/DTD/xhtml1-transitional.dtd. However, remote DTDs specified via http are supported.
If the file has no doctype it will be checked for being well-formed.
To learn more about check out the official W3C pages.
Internally this plugin calls the external command xmllint, which is part of libxml2. If this command is not correctly installed on your system, the plugin will not work.
To load this plugin open 's configuration dialog under Settings Configure .... Then select Validation which will appear in the Application / Plugins section and close the dialog.

Menu Structure
Validate 	This will start the check, as described above.

Thanks and Acknowledgments
Plugin Validation copyright 2002 .
Documentation copyright 2002

Completion
This plugin gives hints about what is allowed at a certain position in an file, according to the file's DTD. It will list possible elements, attributes, attribute values or entities, depending on the cursor position (⪚ all entities are listed if the character on the left of the cursor is &). It's also possible to close the nearest open tag on the left.
The DTD must exist in format, as produced by the Perl program dtdparse. We will call a DTD in this format meta DTD. Some meta DTDs are supplied. They are installed in katexmltools/ in qtpaths --paths GenericDataLocation , which is also the default folder when you choose Assign Meta DTD.... To produce your own meta DTDs, get dtdparse from http://dtdparse.sourceforge.net.

How to Use
Start and open the configuration dialog under Settings Configure .... Then select Completion which will appear in the Application Plugins page and close the dialog. After that, select Assign Meta DTD.... If your document contains no DOCTYPE or the doctype is unknown, you will have to select a meta DTD from the file system. Otherwise the meta DTD that matches the current document's DOCTYPE will be loaded automatically.
You can now use the plugin while typing your text:
< (less than key) 	This will trigger a list of possible elements unless the cursor is inside a tag already. Note that you currently cannot use this to insert the top level element (⪚ <html>).
< /(less than key + slash) 	Entering these characters will offer to close the current element (nearest open one to the left of the cursor). Press to accept the suggestion. Unlike the Close Element menu item, this works only with a DTD assigned.
" (quote key) 	The quote key will trigger a list of possible attribute values (if there are any) if you are inside a tag.
  (space key) 	This key will trigger a list of possible attributes for the current element if you are inside a tag.
& (ampersand key) 	This key will trigger a list of named entities.

Features and Limitations
You can test all functions and limitations by loading katexmltools/testcases.xml in qtpaths --paths GenericDataLocation into and following the instructions.

Menu Structure
Insert Element... 	This will open a dialog that lets you insert an element. The <, > characters and the closing tag will be inserted automatically. If you have selected text when this menu item is selected, the selected text will be surrounded by the opening and the closing tag. The dialog also offers completion of all elements that may be inserted at the current cursor position if you have assigned a meta DTD by using Assign Meta DTD....
< Close Element 	This will search your text for a tag that is not yet closed and will close it by inserting the corresponding closing tag. The search starts at the cursor position and goes left. If it cannot find an open tag nothing will happen.
Assign Meta DTD... 	This will tell the plugin which meta DTD to use for the current document. Note that this assignment will not be saved. You will have to repeat it when you start the next time.

Thanks and Acknowledgments
Plugin Completion copyright 2001,2002 .
KDE SC 4 version copyright 2010 Tomáš Trnka
Documentation copyright 2001,2002