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  • #20511
    Yutaka Emura

    Today, we are releasing EmEditor v15.7.0 beta 1.

    Notes: In order to update automatically to future beta versions, please select Select Update Channel on the Help menu, and select Betas.

    Updates from v15.6.1 include:

    New General Features

    Test results

    While Find, Replace, and Filter tasks using some regular expressions are much faster using Onigmo compared to Boost.Regex, Boost.Regex becomes faster with some other regular expressions. Since the development is still in progress, the test results might be changed in the future.

    positive lookbehind(?<=a)b12.39 seconds4.39 seconds
    negative lookbehind(?<!a)b18.20 seconds4.40 seconds
    positive lookaheada(?=b)4.46 seconds4.62 seconds
    negative lookaheada(?!b)6.73 seconds4.78 seconds
    character range[a-c]9.89 seconds7.00 seconds
    selectionjohn|jack|james3.82 seconds4.23 seconds
    beginning of line^”a3.70 seconds3.95 seconds

    Filter, case insensitive, number of thread 4, 340 MB, 1.92 million line file

    Windows 10 (64-bit) Core i7-4790 16GB RAM

    New Options

    • The Regular Expression Engine drop-down list box was added to the Search tab of the Customize dialog box.

      Bug Fixes

      • Fixed the bug of v15.6.x where the sample box was not updated in the Display tab of configuration properties.


      We would like to thank K. Kosako (Oniguruma) and K. Takata (Onigmo) who created the amazing regular expression engine.

      To Download (64-bit installer) (32-bit installer) (64-bit portable) (32-bit portable)

      These files will be deleted when official release versions become available. The official releases can be downloaded at the Download page.

      Thank you for continue using EmEditor!


      Emeditor open in full screen with Word count plugin active
      Reduce Emditor window size by clicking full screen toggle button
      Expand Emditor window back to full screen by clicking full screen toggle button

      After doing the above I see a broken display area in the bottom right of the Emeditor window

      I’m running Win10 64bit

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