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GNU Emacs has command line options to specify either a file to load and execute, or an Emacs Lisp function may be passed in from the command line. Emacs will start up, execute the passed-in file or function, print the results, then exit. [35] The shebang line #!/usr/bin/emacs --script allows the creation of standalone scripts in Emacs Lisp. [36]
Removes sections from each line of files expand: Converts tabs to spaces fmt: Simple optimal text formatter fold: Wraps each input line to fit in specified width head: Outputs the first part of files join: Joins lines of two files on a common field md5sum: Computes and checks MD5 message digest nl: Numbers lines of files numfmt: Reformat numbers od
Emacs (/ ˈ iː m æ k s / ⓘ), originally named EMACS (an acronym for "Editor Macros"), [1] [2] [3] is a family of text editors that are characterized by their extensibility. [4] The manual for the most widely used variant, [5] GNU Emacs, describes it as "the extensible, customizable, self-documenting, real-time display editor". [6]
For example, Emacs Lisp cannot easily read a file a line at a time—the entire file must be read into an Emacs buffer. However, Emacs Lisp provides many features for navigating and modifying buffer text at a sentence, paragraph, or higher syntactic level as defined by modes. Here follows a simple example of an Emacs extension written in Emacs ...
GNU Emacs comes with two ctags utilities, etags and ctags, which are compiled from the same source code. Etags generates a tag table file for Emacs, while the ctags command is used to create a similar table in a format understood by vi. They have different sets of command line options: etags does not recognize and ignores options which only ...
The unit of operation is a set of lines (associative range) and individual lines are identified with a line number in the range 0.0 to 99999.999; leading zeros in the integer part and trailing zeros in the fractional part may be omitted. The user can specify a line number in any of the following ways Absolute line number: ddddd.ddd
Emacs has included Org Mode [5] as a major mode by default since 2006. Bastien Guerry is the maintainer since 2010, in cooperation with an active development community . [ 6 ] Since its success in Emacs, some other systems now provide functions to work with org files.
With Emacs Speaks Statistics, the user can conveniently edit statistical language commands in one emacs buffer, and execute the code in a second. There are a number of advantages of doing data analysis using Emacs/ESS in this way, rather than interacting with R, S-PLUS or other software directly. First, as indicated above, ESS provides a ...