EmEditor v24.5.2 released

Today, we are releasing EmEditor v24.5.2.

v24.5.2 includes the following bug fixes. Please make sure to always update to the latest version for stable operations.

  • Fixed the text and file drag-and-drop feature issues in version 24.5.1.
  • Adjusted the toolbar and font size for titles during comparisons.

If you use the Desktop Installer version, you can select Check for Updates on the Help to download the newest version. If this method fails, please download the newest version, and run the downloaded installer. If you use the Desktop portable version, you can go to the Download page to download the newest version. The Store App versions can be updated through Microsoft Store (64-bit or 32-bit) after a few days.

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Known Issues and Current Status

This page contains important information regarding the current version issues and their status. The information is being updated frequently.

Some issues might be already fixed in recent versions including preview versions. Please try updating EmEditor to the latest version including preview versions if you believe there are any issues.

Version 24.5.1

  • You may experience issues with the text drag and drop feature, even if the Enable Text Drag and Drop option is selected. Additionally, dragging and dropping files from Explorer might not function as expected. These problems was addressed in the latest version.

Version 24.5.0

  • When trying to uninstall using the desktop version installer, you might encounter a “Custom Action Parameter Error” that stops the uninstallation process. This problem has been fixed in the latest version. To resolve it, go to Help and click on Check for Updates to update to the newest version. Alternatively, you can download the latest version here and run the installer. Once updated, you can proceed with the uninstallation.

From Version 22.4.0 through Version 24.4.1

  • When opening large files (approximately 300MB or more) from a slow hard drive, EmEditor may load duplicate lines, especially if the initial loading is fast and then slows down. If you edit and save the file without noticing this, some text in the file may be saved as duplicates, potentially increasing the file size. This issue was addressed on the latest version.

Version 23.0.3

  • EmEditor may crash as STATUS_ILLEGAL_INSTRUCTION if running on an old CPU not supporting SSE4.2 (for instance, Intel Core 2 Duo released in 2006). The crash was due to a bug in Visual Studio v17.8. The issue was addressed on the latest version.

Version 23.0.2

  • EmEditor may not be able to save workspaces, wrap lines, or show outlining if Keep Locked is selected from the Changed by Another Program drop-down list in the File page of configuration properties. This issue was fixed on the latest version.

Version 23.0.1

  • Macros might stop working by default. To work around this issue, clear the Run macros asynchronously by default option, or set the Use V8 as JavaScript engine option in the Customize Macros dialog. This issue was fixed on the latest version.

All Versions

  • Starting with v23.0.0, the local Help format was transitioned from a single CHM file to multiple HTML files, and the Help will be displayed in a web browser. The Help pages are local if the URL is a local path.
  • If EmEditor crashes when you deal with a very large file, incrasing the virtual memory might prevent the crash. Please see How to Increase Virtual Memory. You could also avoid this problem by reducing the Number of Threads in the Advanced page of the Customize dialog. On v23.0 or later, you could also avoid this problem by setting the Use temporary files while editing option in the Advanced page of the Customize dialog, but it will lower the speed.
  • Pressing the Hankaku/Zenkaku key on a Japanese keyboard might cause EmEditor to crash. This is a bug of Windows. If this issue persists, please revert to a previous version of an IME.

EmEditor v24.5.1 released

Today, we are releasing EmEditor v24.5.1.

v24.5.1 includes the following bug fixes. Please make sure to always update to the latest version for stable operations.

  • Resolved an issue where trying to uninstall using the desktop version installer resulted in a “Custom Action Parameter Error“, blocking the uninstallation process.
  • Enhanced the drag-and-drop feature from the document tab to the basic toolbar for smoother functionality.
  • Fixed a problem where files couldn’t be opened in EmEditor via drag-and-drop from File Explorer when the Enable Text Drag and Drop option was turned off.
  • Addressed a search issue in read-only documents when in CSV cell selection mode.
  • Optimized the Validate command to make it faster, ensure progress is always shown, and allow cancellation at any time.
  • Fixed a potential crash issue that could occur when customizing toolbar buttons with multiple EmEditor group windows open.
  • Resolved a potential crash that could happen while opening files.

If you use the Desktop Installer version, you can select Check for Updates on the Help to download the newest version. If this method fails, please download the newest version, and run the downloaded installer. If you use the Desktop portable version, you can go to the Download page to download the newest version. The Store App versions can be updated through Microsoft Store (64-bit or 32-bit) after a few days.

EmEditor v24.5.0 Released – Fixing Large File Bug, Introducing File Verification, and More

We’re excited to announce the release of EmEditor v24.5.0. We strongly recommend all users update to this new version.

Many users depend on EmEditor for managing large files daily, so ensuring seamless opening, editing, and saving is essential. However, from versions v22.4.0 to v24.4.1, there was an issue where file sizes could increase when reopening large files (around 300MB or more) from certain hard drives, even though the first opening was fine. This was reported by a customer, and we appreciate his feedback and apologize for any inconvenience. This issue didn’t occur with fast hard drives like SSDs, but on slower drives with disk cache enabled, duplicate lines could appear. We fixed this in v24.4.2. In v24.5, we’ve added code to prevent such unknown issues by showing a message if there’s an internal file size inconsistency. Therefore, we strongly recommend all users update to v24.5.

Additionally, v24.5 introduces a new Verify command in the File menu. By selecting this command right after opening a file, you can save the current document as a temporary file and compare its size and SHA256 hash value with the original file.

The dialog that is initially displayed when using the Verify command.

The results are displayed in the File Verification Results dialog box, and you can copy the size and SHA256 hash value. Normally, the original and temporary files should match in size and hash value. However, discrepancies might occur if the original file contains NULL or invalid characters, or if there are hard drive or memory errors. For important files, please use the Verify command immediately after opening to ensure everything is correct.

The File Verification Results dialog box provides information about the outcome of the file verification process. The current document is saved as a temporary file, and its size and SHA256 hash value are compared to the original.
Added the Verify files immediately after opening and Display verification results only if there is a failure check boxes to the File page of the Customize dialog box.

We’ve also added an option in the File page of the Customize dialog box for automatic verification every time a file is loaded.

The new version (v24.5) also includes several other features, many of which were requested by users.

When dealing with large files, it can be convenient to open only a smaller section and navigate to the previous or next section by clicking a button. This was suggested by a customer. In v24.5, we’ve added << and >> buttons to the Large File Controller, allowing you to move to the previous or next section within a specified size range.

The << and >> buttons have been added to the Large File Controller.

We’ve improved the AI-assisted writing feature by expanding the options available with the OpenAI API, which was initially introduced in version 24.1. Previously, suggested text would automatically appear in gray as you typed. Now, you have the option to display suggestions only when you press Ctrl+Space, which helps reduce the frequency of OpenAI API calls. If you prefer the automatic display of suggestions like before, they will only appear when the AI’s suggestion meets a certain confidence threshold, which you can now adjust. For instance, if you set the confidence to 40%, the AI will show suggestions only when it predicts the next text with at least 40% confidence. To minimize suggestions from less certain predictions, you can set a higher confidence, like 80%, ensuring that suggestions are shown only when predictions are more reliable, thus reducing the number of OpenAI API calls. Additionally, we’ve added options to adjust the length of the input text used for predictions and the output text for candidate suggestions. Using longer input text for predictions increases accuracy but also raises the OpenAI API usage fee. Similarly, longer output text results in more words being suggested.

Added the AI Assist page to the Configuration Properties dialog box.

Moreover, based on a request from a customer, we’ve made it so that pasting in the Chat with AI window won’t immediately send the message.

Bugs found during the preview version development have been fixed.

Finally, while EmEditor requires an internet connection for product activation, some environments need a proxy for internet access. In this version, we’ve added a Proxy Settings link in the Register Product dialog, enabling you to configure proxy settings easily. The desktop installer now includes a PROXY option for command line installation.

EmEditor v24.4.2 released

Today, we are releasing EmEditor v24.4.2.

v24.4.2 includes the following bug fixes. Please make sure to always update to the latest version for stable operations.

  • Enhanced the Undo speed after performing a “Replace All” action, even when newlines are involved.
  • Made adjustments for the “Yu Gothic” font.
  • Fixed an issue with the Filter toolbar where the “Abort Filter” during incremental search did not scroll to the selected item.
  • Fixed a potential crash related to DirectWrite.
  • Addressed a potential crash during printing.
  • Resolved a recurring crash when loading a workspace.
  • Fixed a potential crash when clicking the “Find Next” button on the Find toolbar, especially when the “Search All Documents in Group” option is enabled and a window is split.
  • Fixed a bug where encountering a macro error would cause the cursor to jump to the wrong line in v24.4.x.
  • Fixed a bug present since v22.4 where EmEditor could read duplicate lines when opening very large files on a slower hard drive with disk caching enabled.
  • Fixed an issue where replacing with “\J” caused an error.
  • Fixed an issue where the file size wasn’t displayed immediately after opening a file.
  • Set a maximum limit of 10,000,000 to the Additional Lines to Search for Regular Expressions text box in the Advanced dialog box.

If you use the Desktop Installer version, you can select Check for Updates on the Help to download the newest version. If this method fails, please download the newest version, and run the downloaded installer. If you use the Desktop portable version, you can go to the Download page to download the newest version. The Store App versions can be updated through Microsoft Store (64-bit or 32-bit) after a few days.

EmEditor v24.4.1 released

Today, we are releasing EmEditor v24.4.1.

v24.4.1 includes the following bug fixes. Please make sure to always update to the latest version for stable operations.

  • Fixed the issue of freezing and crashing during document comparison that occurred in v24.4.0.
  • Resolved the problem where bold text was not displayed even when the “Highlight Matching Brackets” option was enabled in v24.4.0.
  • Fixed the display position of bookmarks and change line indicators in the Markdown design view in v24.4.0.
  • Addressed a potential crash issue with the OpenDocuments plugin.
  • Reduced the likelihood of crashes due to memory shortage when undoing after replacing all instances including newlines.
  • Fixed display issues that occurred when changing line wrapping methods during document comparison.
  • Improved crash reports.
  • Addressed customer reported issues (1, 2, 3).

If you use the Desktop Installer version, you can select Check for Updates on the Help to download the newest version. If this method fails, please download the newest version, and run the downloaded installer. If you use the Desktop portable version, you can go to the Download page to download the newest version. The Store App versions can be updated through Microsoft Store (64-bit or 32-bit) after a few days.

EmEditor v24.4.0 Released – Markdown Design View

Today, we are excited to announce the release of EmEditor v24.4.0.

The main feature of the latest version (v24.4) is improved Markdown support, introduced in response to customer feedback (1, 2). It includes the new Markdown Design View that offers a near-WYSIWYG experience.

Introduced a Markdown design view that offers a near-WYSIWYG experience for editing Markdown files.

Markdown, introduced by John Gruber, is widely used across various platforms due to its simple text formatting capabilities for paragraphs, links, and images. Documents in Markdown are easily readable even in basic text editors like Notepad, making it popular for blogs, StackOverflow, Wikipedia, and academic papers. Recently, it’s also been used in AI-generated responses. The enhanced Markdown support aims to improve the display of AI prompt responses, a feature introduced in the previous version (v24.3).

A Markdown Design View button has been added to the main toolbar, allowing you to toggle the Design View on or off. When you select the Markdown configuration, opening associated files will automatically enable the Design View. This view is also applied to documents created using the AI prompt feature. You can adjust these settings on the new Markdown page in the Customize dialog.

Added the Markdown Design View button to the default Basic toolbar.

Switching to the Design View displays the Markdown toolbar. By clicking the Markdown Preview button, you can view a preview of the Markdown using the WebPreview plugin.

Added the Markdown toolbar.

Here are some key differences between Markdown Preview and Design View:

  • You can edit in Design View, but not in Preview.
  • Images appear in Preview, while they’re represented as emojis (🖼) in Design View.
  • Line breaks in the source text may not be preserved in Preview, but they always appear as line breaks in Design View. Hard line breaks in the source text are marked with emojis (⏎) in Design View.
  • If table headers are missing in the source text, they are hidden in Preview but shown as empty headers in Design View and can be edited.
  • Code and regular text are displayed in different fonts in Preview, but in the same font with different colors in Design View.
  • Specified languages in fenced code blocks are highlighted in Design View according to the language configuration.
  • HTML tags, character references, and numeric character references in the source text are displayed correctly in the Preview, but they do not appear in the Design View.
  • Heading lines are displayed in the correct font size in the Preview, but in the Design View, they are always shown in the same font size if DirectWrite is not used. By default, the settings use DirectWrite, so this should not be an issue.

Given these differences, it’s advisable not to rely solely on EmEditor’s Design View. Instead, check your work in Preview or an external web browser during editing.

You can change block styles using the dropdown menu on the Markdown toolbar, like Paragraph, Heading 1, Heading 2, etc. You can also format text with buttons like Bold, Italic, Code, etc. These buttons behave differently depending on whether text is selected or already formatted. For example, clicking Bold without selecting text will bold the entire word at the cursor. If the text at the cursor is already formatted differently, only that text will be bolded. Clicking Bold with text selected toggles the bold formatting. Other buttons allow you to create/insert links, images, tables, horizontal lines, line breaks, numbered lists, bullet lists, etc. These commands are also accessible from the Markdown submenu of the Edit menu, with Ctrl+B as the shortcut for Bold.

There’s still room for improvement in the current Markdown Design View. Some users might notice discrepancies between Design View and Preview. For complex edits, Design View might not be ideal. For instance, adding characters at the start of a heading could change it to a regular paragraph. In such cases, it’s better to disable Design View for editing. It’s also quicker to edit source text directly when changing image or hyperlink paths and titles. However, EmEditor isn’t meant to be a full-fledged Markdown editor. Markdown’s strength lies in its readability, even in plain text. We hope you get comfortable toggling Design View on and off as needed.

For parsing Markdown syntax, a modified version of MD4C (Markdown parser for C) by Martin Mitáš is used. MD4C follows CommonMark, which EmEditor also uses as a reference. However, EmEditor supports tables not specified in CommonMark.

The new version (v24.4) also includes several other features, many based on user requests:

  • The display of differing lines in comparison results has been enhanced; similar lines previously grouped as added lines are now shown as changed lines.
  • The Copy All to Other command now closes the source document.
  • Onigmo.Perl has been added to the list of regular expression engines, with Onigmo now called Onigmo.Ruby.
  • The Find/Replace dialog’s multi-line boxes now support automatic line wrapping.
  • Menus hidden when the window width is reduced can now be accessed via keyboard shortcuts. For example, the Macros menu, accessible with Alt+M, is usable even in a small window.
  • The /ola command line option has been added, allowing offline licenses to be saved for the entire computer with admin privileges.
  • Bugs found during the preview version development have been fixed.

We hope you enjoy using EmEditor, whether you choose the Professional or Free version. Please contact us or write in our forums if you have any questions, feature requests, or suggestions.

Thank you for using EmEditor!
Yutaka Emura

Check out the EmEditor v24.4 New Features for more details and screenshots.

If you use the Desktop Installer version, you can select Check for Updates from the Help menu to download the latest version. If this method fails, please download the latest version, and run the downloaded installer. If you use the Desktop portable version, you can go to the Download page to get the latest version. Store App versions can be updated through the Microsoft Store (64-bit or 32-bit) after a few days.

EmEditor v24.3.2 released

v24.3.2 includes the following bug fixes. Please make sure to always update to the latest version for stable operations.

  • Fixed an issue where clicking on a tab could change the document order when multiple document tabs are present.
  • Fixed issues related to printing selected ranges and line wrapping.
  • Fixed a potential crash when aborting asynchronous JScript macros.
  • Fixed a potential crash when detecting HTML/Charset code pages during Find in Files.

If you use the Desktop Installer version, you can select Check for Updates on the Help to download the newest version. If this method fails, please download the newest version, and run the downloaded installer. If you use the Desktop portable version, you can go to the Download page to download the newest version. The Store App versions can be updated through Microsoft Store (64-bit or 32-bit) after a few days.

EmEditor v24.3.1 released

v24.3.1 includes the following bug fixes. Please make sure to always update to the latest version for stable operations.

  • Reduced memory usage during sorting in the 32-bit version.
  • Fixed a rare crash issue with advanced filters.
  • Fixed a rare crash issue when opening files with document tabs disabled.
  • Fixed a keyboard focus issue when saving files with administrator privileges.
  • Fixed a rare crash issue during file comparison.
  • Fixed an issue with the background color in the Web Preview plugin.
  • Adjusted the display/hide behavior of tooltips by the language server.

If you use the Desktop Installer version, you can select Check for Updates on the Help to download the newest version. If this method fails, please download the newest version, and run the downloaded installer. If you use the Desktop portable version, you can go to the Download page to download the newest version. The Store App versions can be updated through Microsoft Store (64-bit or 32-bit) after a few days.

EmEditor v24.3.0 Released – Chat with AI, AI Prompts, AI Toolbar, Using Regex for File Types in Find in Files

Today, we are excited to announce the release of EmEditor v24.3.0.

In Version 24.0, we introduced AI macros to EmEditor. With this new version (v24.3), we’ve taken it a step further by integrating AI functionality using the OpenAI API directly into EmEditor. This allows you to interact with AI right from within the editor. The simplest way to do this is through the new Chat with AI bar. By default, this bar appears when you select Chat with AI from the View menu. You can enter your prompt here and press Enter to get a response from the AI. For multi-line prompts, use Shift+Enter to add a line break, or you can create your prompt in the editor, copy it, and paste it into the Chat with AI bar. You can also drag and drop your prompt. To copy the AI’s response, right-click and select Copy Message.

Introduced the Chat with AI custom bar where you can type prompts to interact with OpenAI.

You can define frequently used prompts on the AI Prompts page in the Customize dialog. By default, prompts like “Send as is,” “Proofread,” and “Rewrite” are pre-defined. Prompts can include the entire document or selected text. For example, you can use the following placeholders:


$(DocText) Entire document
$(SelText) Selection
$(SelOrDoc) Selection or entire document

Using these, you can create prompts like:


Translate into French:
$(SelOrDoc)

In this example, if text is selected, it will be translated into French; otherwise, the entire document will be translated.

You can select the defined prompts from the AI submenu under the Tools menu, and they can also be accessed easily from the AI toolbar. If the AI toolbar is not visible, select AI from the Toolbars submenu in the View menu.

If you want to slightly modify a prompt before using it, right-click the prompt you want to use as a template from the menu or toolbar, and select New Prompt. This allows you to ask questions based on the selected prompt with modifications.

Introduced a New Prompt dialog box.

When defining prompts, you can also specify Output, Max tokens, and Temperature in addition to the message. For example, selecting Create New Document for Output will generate the AI’s response as a new document. If you are proofreading a document, selecting Split and Compare will display the document before and after proofreading side by side. Selecting Image will display the image specified in the prompt within EmEditor as a web browser. Adjusting the Max tokens can limit the number of words in the AI’s response. For example, if the Max tokens is set to 10, the response will be shortened to a few words. The Temperature setting controls randomness; a higher value results in more creative responses, while a lower value yields more consistent and accurate responses. Additionally, setting Save to Chat with AI will output the interaction with the AI to the Chat with AI bar, allowing you to monitor and save the conversation.

Added AI Prompts page to the Customize dialog box.

If you need common instructions for AI prompts, you can write them in the System role message for AI prompts section on the AI Options page in the Customize dialog. For example, writing “Do not use Markdown syntax” will prevent the AI from using Markdown syntax in its responses.

Renamed the AI page in the Customize dialog box to AI Options.

Additionally, based on customer feedback, you can now specify file names using regular expressions as well as wildcards in the File Types section of the Find in Files dialog. To use regular expressions, click the > button to the right of the File Types dropdown in the Find in Files dialog and select Regular Expression. For example,


Data[0-9]{1,3}\.txt

will target only file names from Data0.txt to Data999.txt for searching.

Added Wildcard and Regular Expression to the File Types context menu in the Find/Replace in Files dialog box.

Since the previous version, an internet connection has been required for product registration, but some customers may not have access to the internet. Therefore, in this version, we have made it possible to register the product offline using the new /ol command line option. For customers who wish to do so, we will send an offline license file via email. Please refer to Offline Registration for more details.

We hope you enjoy using EmEditor, whether you choose the Professional or Free version. Please contact us or write in our forums if you have any questions, feature requests, or suggestions.

Thank you for using EmEditor!
Yutaka Emura

Check out the EmEditor v24.3 New Features for more details and screenshots.

If you use the Desktop Installer version, you can select Check for Updates from the Help menu to download the latest version. If this method fails, please download the latest version, and run the downloaded installer. If you use the Desktop portable version, you can go to the Download page to get the latest version. Store App versions can be updated through the Microsoft Store (64-bit or 32-bit) after a few days.