History

The first new release since 3.72 (2008). The 1999–2005 source was modernized for current Windows without changing what the editor is — same look, same features, now a clean 64-bit build.

• 64-bit (x64) build — full port from the original Win32 code; pointer-truncation and size_t issues fixed across the codebase, all four build configurations compile warning-free.
• Visual Studio 2026 (v145 toolset) — migrated from the original VC6 project files (.dsp/.dsw) to a modern .sln/.vcxproj. The legacy VC6 build is preserved on the cedt371-original branch.
• New Inno Setup installer (cedt-381-setup.exe) — replaces the old NSIS installer, bundles the Visual C++ x64 runtime, installs to Program Files, and optionally adds an “Edit with Crimson Editor” entry to the Explorer right-click menu.
• Both editions in one installer — Korean and English, selectable at install time.
• Reorganized source tree — the previously flat ~180-file tree is split into src/{include, core, app, doc, view, frame, panels, dialogs, util, network}.
• Unit tests — a new Google Test suite (60 tests across 12 suites) covering the core algorithm and data-container modules.
• Redesigned application icon.

• bug fixed: DEL key deletes directory item when project item is selected.
• bug fixed: ftp file transfer error when the file size is multiple of 512 bytes.
• bug fixed: search & replace the beginning of line crashes Crimson Editor.
• bug fixed: find with ‘Match whole word’ considers a ’_’ as not part of a word.
• bug fixed: comment color when typing the word ‘remove’ in ASP document.
• bug fixed: screen resolution problem using dual monitor.
• bug fixed: backup file creation failed in UNC path.
• bug fixed: abnormal caret movement after print preview.
• bug fixed: search next selected text in column mode.
• bug fixed: open last working remote file without saving password.
• bug fixed: CWD now follows ‘File Open’ dialog.
• bug fixed: problem typing Se-Bul-Sik Korean characters.
• bug fixed: loses project workspace when user cancel program termination.
• bug fixed: sharing violation when try to open a file already in use.
• bug fixed: abnormal command line execution ‘C:\some path>cedt \autoexec.bat’.
• Drag and Drop text editing.
• Reduced memory footprint. (50%) - but still uses lots of memory
• Supports Unicode and UTF-8 encoding.
• Increased maximum number of characters in a single line. (4096->32768)
• Splitter Window, New Window.
• Drive list in directory window refreshes on drop down.
• Saves project workspace whenever there is a change in project tree.
• Saves folding status of project categories.
• [Shell Execute] right click menu for files listed in a project.
• Project category names are editable now.
• User Tool path and argument recognize shell variables. (variable expansion)
• Predefined column mode font when screen font is not a fixed size font.
• Saves workspace windows placement.
• Follows symbolic links in Open Remote dialog.
• Increased the number of ftp server accounts. (10->16)
• Added [Replace All] in ‘Replace This Occurrence’ box. (Yes/No/All/Once/Stop)
• F3, Shift+F3 skips current search occurrence during Search and Replace.
• Search wraps at end of file. (optional)
• Cedt-type document icon changed.
• Third quotation mark definition in language specification.
• Accurate variable detection logic. (“$VARIABLEENCLOSEDBY={}”)
• Variable highlight in constant string. (in PHP, Perl, Shell, …)
• Added short-cuts in all popup menu items.
• Hot keys changed. - Scroll Screen Center (F5), Top (Shift+F5)
• Hot keys changed. - Close Window (Ctrl+W), Select Word (Ctrl+D)
• Hot keys changed. - Lower Case (Ctrl+L), Invert Case (Ctrl+Shift+L)
• New hot keys. - Next Pane (F6), Prev Pane (Shift+F6)

• bug fixed: error in upgrading shell extension dll during installation
• bug fixed: crash when print preview without a printer
• bug fixed: wrong line numbers on the printout
• bug fixed: weird operation with escape character + TAB character
• bug fixed: save hidden, system files with empty contents
• support project management
• second instance does not reload last working files
• last working files include remote files
• scroll screen to position caret to top or center (F5, F6)
• reserves caret position when reload a file
• save user defined color schemes
• save & load different sets of User Tools
• handles European accented characters
• enhanced safety and strict error checking on FTP work
• faster screen drawing dealing with big text files
• Home key goes to first position (optional)
• backup remote files in local disk drive
• checks existence of user tool executables
• input box for output window to send user inputs
• remembers search directory in Find in Files and Open Project

• bug fixed: ‘Save As Remote’ dialog box
• bug fixed: ‘Allow multiple instances’ option in preferences dialog box

• bug fixed: ‘Add Crimson Editor to right mouse button of Window Explorer’
• bug fixed: document switching Ctrl+PgUp & Ctrl+PgDn
• column mode editing (mode change: Alt+C)
• FTP transfer progress can be canceled by user
• multiple file types in ‘Find in Files’
• use spaces in place of tab option in Preferences
• upgraded help topics
• search functions can be used in macro recording
• enhanced caret movement hot keys (Alt+Home, Alt+End)

• bug fixed: file modification indicator when undo or redo is executed
• bug fixed: ‘Save All’ saves only changed files
• bug fixed: save before exit for remote files
• bug fixed: bug related to read only files
• bug fixed: macro recording (selection, convert case)
• bug fixed: tabs to spaces, spaces to tabs
• regular expression in search & replace
• look in sub-folders in ‘Find in Files’
• replace in all open files
• select text with shift+click
• reload last working files on startup
• remember last explored directory
• syntax highlighting types
• different color assignment in active line
• highlight pairs when caret is in right of the bracket
• range highlight (in ASP, PHP, JSP files)
• manage file type association
• enriched English dictionary (around 100000 words included)
• date functions in calculator
• file operations in directory window
• sync directory window to the current file
• using NSIS install shield (by courtesy of Nullsoft)

• bug fixed: variable highlighting problem in PHP, Perl, Bash
• bug fixed: printing spaces (space width mismatch)
• delete word (Ctrl+Del), delete prev word (Ctrl+Back)
• delete to end of line (Ctrl+Shift+Del)
• capture output (send input to running process + kill current running process)
• color selection dialog box changed
• copy current line when nothing is selected
• color information is saved in different file from the configuration file
• backup files (with options)
• right mouse button in Window Explorer (complete implementation)
• built-in calculator (Evaluate Line)

• bug fixed: critical problem related to Windows resource
• option to convert tabs to spaces before saving
• option to remove trailing white spaces before saving
• option to show tab characters & line break
• highlight variables that begin with special characters (bash, perl, php)
• highlight hexa-decimal numbers begin with special character
• it may support Japanese IME (I believe)

• bug fixed: Alt+Tab while composing double byte
• bug fixed: unordinary ‘File not File’ message box
• bug fixed: delete at the end of line while ‘Word Wrap’ turned on
• bug fixed: dos command line parameter including ’.’ and ’..’
• support overwrite mode
• hot key assignment for ‘User Tools’ and ‘Macros’
• ‘Close on exit’ option in ‘User Tools’ (launch.exe)
• support WinHelp (.hlp) and HtmlHelp (.chm) files in ‘User Tools’
• ‘Output Window’ and ‘Find in Files’ (Ctrl+Shift+F)
• custom FTP client (‘Save password’ option, support more FTP servers)
• ‘Open Template’ (Alt+O)
• ‘Directory Window’ menu and toolbar
• and a lot of small changes…

• divide by zero bug fixed (more strict user configuration file check)
• reload on remote file bug fixed
• complex syntax highlighting (check keyword effect range)
• dos command to run Crimson Editor “cedt.exe *.c”
• command line option “cedt.exe /L:33 test.h”
• half page scrolling shortcut (Alt+Page Up, Alt+Page Down)
• move caret to paragraph begin or paragraph end shortcut (Alt+Home, Alt+End)
• ‘Add Crimson Editor to right mouse button’ option
• ‘Print syntax highlight’ option
• ‘Create new document on startup’ option
• ‘Save remote files in Unix format’ option

• upgrade bug fixed

• home-made GetLongPathName() function
• editable file types (Tools > Preferences > Files > Filters)
• default language specification
• local help pages are included in distribution zip file
• recovery from corrupt configuration file (cedt.cfg)
• encoded FTP password in Open Remote
• use long file name in User Tools (JAVA source compile)
• second line comment delimiter can be specified for each programming language
• effective range for keywords can be limited (HTML, ASP, PHP, JSP)

• ‘Working Directory’ in Tools > Preference > Files
• ‘Save files in Unix format’ option in Tools > Preference > Files
• new edit commands (Edit > Change Case)
• new search commands (Search > Advanced)
• new toolbar buttons (Open Remote, Directory Window)
• menu items in Tools menu and Macros menu are rearranged
• menu items in Window menu changed (Last Visited, Next Window, Prev Window)

• line number bug fixed.
• use lesser window resources. (became faster than before)

• ‘Directory Window’ attached to the left side of Mainframe
• added ‘Open Remote’ function
• added ‘Pairs Matching’ feature
• ‘Copy & Paste’ bug fixed
• updated user interface

• do not use DDE to initialize (faster start up)
• wheel mouse support.
• ‘Whole Word Only’ option in Find & Replace
• added context menu on file selection tab
• reserve caret position scrolling up & down.
• revised text selection routine

• ‘Save As’ bug fixed
• added new menu item in Help menu