High Quality Content by WIKIPEDIA articles! GNU readline is a software library created and maintained by the GNU Project. It is licensed under the GPL, and used in projects such as bash. It provides line-editing capabilities. The current version is 6.1. Newer features include multibyte (Unicode) character support. For instance, in a readline-enabled application, pressing ctrl-b moves the cursor back one space, ctrl-f moves the cursor forward one space, and ctrl-r searches the command history. These key bindings (which are the default, although bindings like vi's are optional) are taken from one of GNU's earliest and most popular project, the text editor Emacs. Readline supports a variety of basic features, including a kill ring (a more flexible version of a copy/paste clipboard) and tab completion. As a cross-platform library, readline allows applications on various systems to exhibit identical line-editing behavior.

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