o 2.49.0

Debug-related functionality

• Make it possible to step through a C or C++ program with gdb.
• Make it possible to step through Assembly too (requires yasm or nasm, ld and gdb).
• Jump to the line that gdb is at when stepping through a program.
• Jump to the top when a debug session starts, and to the end when it's done.
• Only display the debug menu item if gdb is found.

Building

• Use file modes instead of file extensions when selecting a build command (for most cases).
• Improve the error handling when building.
• Improve the build result check.
• Minor changes to build-related status messages.

Templates

• Add a template for Hello, World! that can be inserted into an empty Perl (.pl) file with ctrl-w.

Formatting

• Let ctrl-w format Perl scripts with perltidy.
• Let ctrl-w format shell scripts with shfmt.
• Display no status message when formatting with ctrl-w.

Fixes

• Only detect file modes by content if file mode by filename did not work out.
• Refactor the code related to building with ctrl-space. Introduce a better way to check for build results.

Syntax highlighting

Minor improvements to the syntax highlighting of:

• Go code
• Rust code
• Python code
• Makefiles
• Shell scripts
• Assembly code written for Amiga
• Log files (using xyproto/stringpainter).

Code editing

• Don't add parenthesis for if and for for Rust when pressing return.

Status messages

• Improve the status message for when macro recordings are stopped with ctrl-t.

Environment variables

• Respect XDG_CONFIG_HOME.
• Expand ~ if it's used in ie. $TMPDIR.

General

• Follow the advice of staticcheck and golint.
• Update documentation.
• Update CI configuration.
• Update dependencies.

o 2.48.3

• Add a /v2 path to the repository and to go.mod, to make o compatible with the Go module versioning system (ref #5).
• When searching and replacing, let the status message have a count of the instances that were replaced.
• When jumping to a line with ctrl-l, make it possible to also jump to a percentage (like 50%) or to a fraction (like 0.5).
• Add support for searching for, and replacing, unicode runes, using au+0000 string.
• Improve the ko GUI application: free three more variables when the program ends.
• Improve the syntax highlighting of configuration files.
• Improve the menu choice labels.
• Update documentation.

o 2.47.0

• Improve syntax highlighting for Go, shell scripts and Assembly.
• Add a menu option for stopping the parent process and quitting without saving. This is useful when starting many instances of o with find.
• Fix an issue with using Pandoc for rendering PDF files, where the input filename was given to pandoc twice.
• Add macro functionality, where ctrl-t can be used for both recording and playing back a series of key presses. esc clears the macro.
• Initial support for detecting Basic filetypes.
• Adjust the top margin of the ctrl-o menu and make the ctrl-o menu slightly simpler
• Add initial support for Agda. Let:
  • ctrl-t insert a symbol, when editing Agda files
  • ctrl-space build Agda programs, and jump to the location of the first error
  • ctrl-w in a blank file insert an example Agda program
  • ctrl-t,n insert ℕ
  • ctrl-t,t insert ⊤
• C and C++:
  • Improve the C and C++ source/header file search
  • Also support jumping between .c++ and .h++ files with ctrl-t
• Update documentation
• Update dependencies

o 2.46.0

• Add support for decompiling .class files with jed when opening them.
• Add search and replace functionality: after searching with ctrl-f, pressing tab instead of return prompts the user for the replacement text.
• Slightly improve the syntax highlighting for Go, shell scripts, Java, Makefiles, AIDL and Object Pascal.
• Fix: Let ctrl-space not run go test anymore when editing *_test.go files. This feature needs more thought.
• Check for WAYLAND_DISPLAY when detecting if copy/paste utilities are present.
• Update documentation.

o 2.45.0

• Fix for respecting the color theme when viewing man pages or highlighting Markdown documents.
• Improve the Nroff detection.
• Initial support for Perl and M4.
• Improve the redraw behavior slightly for when using ssh, tmux or screen.
• Initial support for setting breakpoints (but the debug feature is not complete).
• Some refactoring.
• Add a silly little game about feeding creatures before they are eaten.
• Fix an issue with commenting out single lines of code with ctrl-\.
• Improve syntax highlighting for Assembly and Go-style Assembly.
• Syntax highlight files in /usr/share/doc, even if they are read-only.
• Let ctrl-l and then e go to the end of the file.
• Let ctrl-l and then f go to the top of the current function.
• Let ctrl-l and then t go to the top of the file.
• Let ctrl-l and then m (or c) go to the middle (or center) of the file.
• Improve the Ada, Markdown, man-page and Standard ML syntax highlighting.
• Fix an issue where commenting out a block of code at the very end of a file with ctrl-\ would cause a freeze.
• Minor changes to the HTML tidy arguments.
• Add templates for HTML and Standard ML (can be inserted with ctrl-w if the file is empty).
• Use a dark theme if Alacritty is detected.
• Compile Standard ML with ctrl-space by using mlton.
• Improved accelerator key selection algorithm for the ctrl-o menu. Now small words like at or of are avoided.
• Add menu options for rendering PDF.
• Let space and return scroll down when viewing man pages or read-only files. Let backspace scroll up.
• GUI: Let ctrl-end and ctrl-home go to the top or end of the file (there's currently a slight delay when doing this, but it works).
• GUI: Use the default color theme even if xterm is used to launch ko.
• Update dependencies.
• Update documentation.

o 2.43.1

• Fix syntax highlighting for Python docstrings.
• Fix repeated code formatting with ctrl+w.
• Initial support for Amber templates.
• Update documentation.

o 2.43.0

• Add font scaling with ctrl-+, ctrl-numpad +, ctrl-- and ctrl-numpad -.
• Rename the GUI interface to ko, for easy typing. (Also, it's a word used in the game of Go, and o is written in Go).
• Compile the release binaries with Go 1.17.

o 2.42.0

• Improve text rendering performance by profiling o and updating vt100.
• Fix an off-by-one canvas drawing issue that became apparent when vt100 was updated.
• Add a stack trace to the error message output.
• Follow the advice of the golint utility.
• Use the red/black/gray theme if the o executable name starts with r.
• Adjust the syntax highlighting for Go.
• Let the GUI interface also handle and respond to: Page Up, Page Down, Home, End, Insert, Delete, Shift+Delete, Ctrl+Insert, Shift+Insert, F1, F2, F3, F4, F10 and F12.
• Minor changes to the desktop shortcut for the GUI interface.
• Better default font logic in the GUI interface.
• Update documentation.
• Update dependencies.

o 2.41.3

Changes to o:

• Let SIGUSR1 unlock locked files.
• Change the wrap behavior so that long lines are not wrapped by default when typing, for some file types.
• Update the documentation.

Changes to the GUI application in the gui directory:

• Show the file chooser dialog if no filename is given.
• More graceful exits with regard to file locking.
• Improve the VTE color scheme.
• Add new icons for the desktop shortcut.

o 2.41.1

• Limit how much memory the undo buffers can use before starting to re-use undo buffers.
• Fix the man page detector. Some unusual Markdown files were mistaken for man pages.
• Refactor code that related to themes.
• Minor changes to the desktop shortcut.