Use arbitrary expressions in watches

Watches can be used to display not only variables, but also any expression or function call; for example: 1+2, collectgarbage('count'), or tbl and tbl[1] or nil.

Show several values as one watch

To show multiple values as one watch, you can wrap them into a table literal: {'a','b','c'} or {(function_that_returns_several_values()}.

Show selected elements from a table in the Watch window

To show only some elements from a large table, you can use an expression that may look like this: tbl and {x=tbl.x, y=tbl.y} or nil.

Go to definition

(0.39+) To jump to the definition of a local variable (also works for loop variables and parameters), you can use Alt/Opt+Ctrl+Click or right mouse click and select Go To Definition. You can then navigate back to the original location by using Alt/Opt-Left.

Select all instances of a variable

(0.38+) To select all instances of a variable (scope-aware), you can use Ctrl/Cmd+DblClick or right mouse click and select Rename All Instances. The menu item will also show how many instances will be selected (screenshot and details).

To quickly search for previously searched word, you can use Find Next (F3) and Find Previous (Shift-F3).

To quickly search for selected string (when it’s different from the previous search string), you can use Select and Find Next (Ctrl/Cmd-F3) and Select and Find Previous (Ctrl/Cmd-Shift-F3).

When you select all instance of a variable, you can navigate them forward and backward using Find Next (F3) and Find Previous (Shift-F3).

Search in the console history

(0.39+) To search and auto-complete commands in the console history, you can start typing the command and then use TAB, which will auto-complete the last matching command. You can see other matches if you continue pressing TAB.

Auto-reload externally modified files

(0.50+) To auto-reload externally modified files set editor.autoreload configuration setting to true. If no conflict is detected, the file content is going to be reloaded and its current markers (breakpoints and others) are going to be restored if possible.

(0.80+) This option is enabled by default.

Hiding files in the Project tree

You can hide files with specific extensions in the Project tree by opening a local menu in the tree (right click on any tree item) and selecting Hide '.ext' Files. You can unhide hidden files by selecting Show Hidden Files from the same menu.

Refresh search results

You can refresh search results by using right click on the tab and selecting Refresh Search Results from the popup menu.

Close search results pages

You can close search multiple results pages by using right click on the tab and selecting Close Search Results Pages from the popup menu.

Quick jump to the function call from the Stack view

To jump to the position in the source code referred to in the Stack window, double click on a function name in the stack frame.

Search or replace with regular expressions

To search or replace using regular expressions, you can enable a checkbox Regular Expression. These regular expressions do not accept Lua character classes that start with % (like %s, %d, and others), but accept . (as any character), char-sets ([] and [^]), modifiers + and *, and characters ^ and $ to match beginning and end of the string. Regular expressions only match within a single line (not over multiple lines). See Scintilla documentation for details on what special characters are accepted.

Search and replacement with regular expressions and captures

(0.39+) When regular expression search is used with search and replace, \n refer to first through ninth pattern captures marked with brackets (). For example, when searching for MyVariable([1-9]) and replacing with MyOtherVariable\1, MyVariable1 will be replaced with MyOtherVariable1, MyVariable2 with MyOtherVariable2, and so on.

Pretty printing in the Console window

All results shown in the Console window are pretty printed as one line, with all complex results shown with all their elements. To print complex elements on multiple lines, you can prepend the expression with =, as in ={1,2,3,'a','b','c'}.

Limit results shown while pretty printing in the Console window

To limit the number of levels shown during pretty printing, instead of val, use return require('mobdebug').line(val, {maxlevel = 1}), and instead of =val, use return require('mobdebug').line(a, {indent = ' ', maxlevel = 1}).

(1.51+) Another option to limit the number of levels shown during pretty printing, is to add a comment with serializer options, so instead of val, use val -- {maxlevel = 2}. You can use any option supported by the Serpent serializer, for example, you can change the format for the results of the expression using numformat option: val --{numformat = "%x"}.

Quick jump to the source of the error

To jump to the position referred to in the error message shown in the Output window, you can double click on the line showing the error message. This also works for messages in the stack trace as long as they include the file name.

Run multiple instances of the IDE

To run multiple instances of the IDE, you can start one instance as you normally do, and then start the second instance using this command: zbstudio -cfg "singleinstance=false". If you are on MacOS, you may need to use open ZeroBraneStudio.app --args -cfg "singleinstance=false".

Run multiple instances of the IDE to debug two applications at the same time

To run multiple instances of the IDE to debug two applications, you can start one instance as you normally do, and then start the second instance using this command: zbstudio -cfg "singleinstance=false; debugger.port = 8173". If you are on MacOS, you may need to use open ZeroBraneStudio.app --args -cfg "singleinstance=false; debugger.port = 8173".

Merge and split windows and tabs

You can resize windows by dragging the splitters between them. To undock or re-dock the window, doubleclick on the tab background of the notebook in that window (0.60+). To move the window, click and hold the mouse on the window caption area (when the window is undocked); then drag the window to a new location. To dock the window, release the mouse when one side of the main window changes its color to light blue. If you want to avoid docking, press Ctrl/Cmd button before releasing the mouse button. The new configuration will be used until you reset or change it.

Move windows without docking them

Ctrl-Drag/Cmd-Drag will move the window without trying to dock it.

Project switching

You can change the current project in several ways:

  1. Use Project | Project Directory | Choose....
  2. Use File | Recent Projects (0.60+).
  3. Use the context menu in the Project tree (mouse right click) and then Project Directory (0.60+).
  4. Use Choose a project directory icon on the toolbar.
  5. Use dropdown next to the Choose a project directory icon on the toolbar (0.60+).

Project tree refresh

(1.40+) All the changes in the file system will be reflected in the Project tree when they happen in the folders expanded in the tree.

To refresh the project tree manually you have several options:

  1. Collapse/Expand a particular directory, which will refresh its content.
  2. (1.10+) Use Refresh item in the context menu in the project tree (mouse right click).

If you are using one of the earlier versions, you can check Refresh Project plugin (Windows only).

Show Output and Console windows side by side

The default configuration shows Output and Console windows as tabs in the same window. If you want to see them side by side, you can drag one of the tabs to a different location inside the same window and dock it there.

Clear the content of the Output window

The content of the Output window can be cleared by accessing context menu (right click of the mouse) and selecting Clear Output Window.

Zooming all editor tabs

(0.41+) Use Shift+Zoom (Shift+Ctrl+Scroll) to zoom all editors. Using Ctrl+Scroll still zooms only the current editor tab.

Sorting of functions in the Outline

To change the order of functions displayed in the Outline between sorted and in the order of appearence in the source file, access the context menu (right click on the mouse) in the Outline and select toggle Sort By Name.

To change the default order, add the following to the configuration file: outline.sort = true/false.

Copying value from the Watch window

To copy a value from the Watch window to the clipboard (which may be useful if the string representation of the value doesn’t fit in the window), access the context menu (right click on the mouse while pointing to the value to copy) and select Copy Value.

Show numeric values in Console in hexadecimal format

To change the format of numeric values, add the following fragment to the configuration file or execute it in the Local Console (in which case it will only be active for the current session):

debugger.init = [[
  local mdb = require('mobdebug')
  mdb.origline, mdb.line = mdb.line, function(v) return mdb.origline(v, {numformat = "0x%x"}) end
]]

This will affect all the numbers shown in the Watch, Stack, tooltips, and Remote Console windows. To switch back either remove the configuration setting or reset debugger.init back to an empty value.

Change format for numeric values in Stack/Watch windows

(1.51+) To change the format of numeric values shown in Stack/Watch windows, set debugger.numformat contiguration setting to the desired value. For example, to show the values in the hexadecimal format, add the following fragment to the configuration file:

debugger.numformat = "0x%x"

This will affect all the numbers shown in the Watch, Stack, and tooltips, but will not affect Local/Remote Console windows.

Adding custom API

To add your own custom API to be recognized in auto-complete and tooltips, you can use the api configuration setting.

Document map (plugin)

To enable document map that provides a bird’s-eye view of the currently edited document, you can use document map plugin.

Clone view (plugin)

To open and edit the same file in multiple windows, you can use clone view plugin.

Real-time watches (plugin)

To display values from your program while it is running, you can use real-time watches view plugin.

Project settings (plugin)

To set project-specific settings, you can use project settings plugin.

Auto-start debugger (plugin)

To start the debugger server automatically when the IDE is started, you can use autostart debugger plugin.

what a breath of fresh air. (doctorbling)

IMHO, ZBS is the fastest, most-flexible, best-thought-out IDE AND Debugger I've used since I began coding professionally in 1980. (Michael Berlyn)

Love ZeroBrane Studio. Lightweight. Works. Powerful. (Ross Berteig)

Love the debugger, saving my life. (Troy Sandal)

Thanks again for your awesome IDE. I've moved over to it, forsaking my previous investment in Decoda! (Stephen Nichols)

my kids love ZeroBrane. (Phil Hagelberg)

ZBS is beautiful experience. I am using it usually 10 hrs every day w/o problems. (Srdjan Markovic)

...heartily recommend it. (stun)

I love ZBS. I use it for all of the work I’ve started doing in Lua...! This IDE is fantastic! (Eddie Dover)

ZeroBrane Studio has got a working debugger, full IDE feature set, small footprint, and is completely customizable in lua. You have no idea how excited I was to find this little gem! (Jonathan Shieh)

It's a joy to use;... totally rock solid. (Jeff Smith)

Complaining about Zerobrane is like complaining that a beautiful spring day is a couple degrees too warm. (Jim Burnes)