Download SciTE 5.4.2

Version 5.4.2 of SciTE has been released. Scintilla Text Editor is an open source and cross-platform text editor. It uses the open source Scintilla Text Editor library, which is from the same makers. This library is also used by other programs, including Notepad++. Downloads are available for Windows and Linux, and a commercial version for macOS can be found in Apple's app store. There is also a standalone executable that can be conveniently carried on a USB stick. The following changes and improvements have been made in this release:

Release 5.4.2

• Significantly reduce memory used for undo actions, often to a half or quarter of previous versions. Feature #1458.
• Add APIs for saving and restoring undo history.
• For GTK, when laying out text, detect runs with both left-to-right and right-to-left ranges and divide into an ASCII prefix and more complex suffix. Lay out the ASCII prefix in the standard manner but, for the suffix, measure the whole width and spread that over the suffix bytes. This produces more usable results where the caret moves over the ASCII prefix correctly and over the suffix reasonably but not accurately.
• For ScintillaEdit on Qt, fix reference from ScintillaDocument to Document to match change in 5.4.1 using IDocumentEditable for SCI_GETDOCPOINTER and SCI_SETDOCPOINTER.
• For Direct2D on Win32, use the multi-threaded option to avoid crashes when Scintilla instances created on different threads. There may be more problems with this scenario so it should be avoided. Bug #2420.
• For Win32, ensure keyboard-initiated context menu appears in multi-screen situations.