1 [This is an edited version of the original mg README, updated slightly to 2 reflect changes in the last 20 years.] 3 4 5 Mg (mg) is a Public Domain EMACS style editor. It is "broadly" 6 compatible with GNU Emacs, the latest creation of Richard M. 7 Stallman, Chief GNUisance and inventor of Emacs. GNU Emacs (and other 8 portions of GNU as they are released) are essentially free, (there are 9 handling charges for obtaining it) and so is Mg. You may never have 10 to learn another editor. (But probably will, at least long enough to 11 port Mg...) Mg was formerly named MicroGnuEmacs, the name change was 12 done at the request of Richard Stallman. 13 14 Mg is not associated with the GNU project, and most of it does not 15 have the copyright restrictions present in GNU Emacs. (However, some 16 of the system dependent modules and the regular expression module do 17 have copyright notices. Look at the source code for exact 18 copyright restrictions.) The Mg authors individually may or may not 19 agree with the opinions expressed by Richard Stallman in "The GNU 20 Manifesto". 21 22 This program is intended to be a small, fast, and portable editor for 23 people who can't (or don't want to) run real Emacs for one reason 24 or another. It is compatible with GNU because there shouldn't be 25 any reason to learn more than one Emacs flavor. 26 27 28 Beyond the work of Dave Conroy, author of the original public domain 29 v30, the current version contains the work of: 30 31 firstname.lastname@example.org Bob Larson 32 email@example.com Mic Kaczmarczik 33 firstname.lastname@example.org Mike Meyer 34 email@example.com Sandra Loosemore 35 firstname.lastname@example.org Michael Portuesi 36 RCKG01M@CALSTATE.BITNET Stephen Walton 37 email@example.com Marion Hakanson 38 39 People who have worked on previous versions of Mg: 40 41 firstname.lastname@example.org Dave Brower 42 43 Early release history: 44 45 * Nov 16, 1986: First release to mod.sources 46 * Mar 3, 1987: First Release (mg1a) via comp.sources.unix 47 * May 26, 1988: Second release: (mg2a) via comp.sources.misc 48 * Jan 26, 1992: Linux port released by Charles Hedrick. This version 49 later makes its way onto tsx-11, Infomagic, and various other Linux 50 repositories. 51 * Feb 25, 2000: First import into the OpenBSD tree, where it is 52 currently maintained with contributions from many others. 53 54 ---------------------------------------------------------------------- 55 56 Known limitations: 57 58 Recursive bindings may cause help and key rebinding code to go into 59 an infinite loop, aborting with a stack overflow. 60 61 Overwrite mode does not work in macros. (Characters are inserted 62 rather than overwriting.) 63 64 Dired mode has some problems: Rename does not update the buffer. 65 Doing a dired again will update the buffer (whether it needs it or 66 not) and will lose any marks for deletion. .. and . are not 67 recognized as special cases. 68 69 On systems with 16 bit integers, the kill buffer cannot exceed 32767 70 bytes. 71 72 Unlike GNU Emacs, Mg's minibuffer isn't multi-line aware and hence 73 some commands like "shell-command-on-region" always pop up a buffer to 74 display output irrespective of output's size. 75 76 While navigating source code using Mg's cscope commands, the cursor 77 is always at the match location rather than in *cscope* buffer. Mg uses 78 the same keybindings of GNU Emacs's xcscope package for it's cscope commands. 79 As Mg's keybindings are case-insensitive some of the commands don't have a 80 default keybinding. 81 82 New implementation oddities: 83 84 insert and define-key are new commands corresponding to the mocklisp 85 functions in GNU Emacs. (Mg does not have non-command functions.) 86 (Mg's insert will only insert one string.) 87 88 The display wrap code does not work at all like that of GNU emacs. 89 90 Some commands that do not mimic emacs exactly don't have a "standard" 91 emacs name. For example 'backup-to-home-directory' is only a partial 92 implementation of emacs' range of commands that allow a user to 93 customise the backup file location. If a more complete implementation 94 were coded of these commands the non standard commands would probably 95 be removed.