• Added io.truncate() to truncate a file.
• Added string.comparematches() to compare two matches; this is normally not needed because Clink automatically sorts matches, but some match generators may prefer to disable the automatic sorting and perform custom sorting.
• Added rl.describemacro() to associate descriptions with luafunc: macros (or any macro), to be shown in the clink-show-help and clink-what-is commands.
• The clink.popuplist() function now accepts a callback function to be invoked when Del is pressed.
• The colored-completion-prefix configuration variable now works with match display filtering, provided the display strings only prepend or append to the match strings.
• Removed the obsolete clink.gui_popups setting.
• Fixed the completion-prefix-display-length configuration variable in various cases.
• Fixed timing condition that could potentially crash (regression introduced in v1.3.40).