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Change Log

All relevant changes to the project are documented in this file.

v3.1 - 2018-07-22

The standalone release, with lots of OpenBSD fixes and improvements.

Changes

  • Remove libite (-lite) build/runtime requirement. All OpenBSD compat functions now maintained in-tree, used automatically when missing
  • Keep current buffer if switch-to-buffer is aborted, from OpenBSD
  • Present the default choice before the colon in prompts, from OpenBSD
  • Extract compile_mode command status with WEXITSTATUS, from OpenBSD
  • Let the Insert key toggle overwrite mode, from OpenBSD
  • GNU Emacs compatibility with query-replace & capitilisation, from OpenBSD
  • When exiting i-search with ^M, drop mark, like GNU Emacs, from OpenBSD
  • Remove theo analyzer from OpenBSD build, archived upstream
  • Enable regexp search by default in configure script, now all features are on parity and can be disabled/enabled in the same fashion
  • Clarify licensing of project, everything is in the public domain

Fixes

  • Fix #1: Enable M-x no-tab-mode, disabled in OpenBSD by default
  • Fix line numbering bug, from OpenBSD
  • Fix display of overlong lines containing non-ASCII bytes, from OpenBSD
  • Fix description of delete-non-matching-lines, from OpenBSD
  • Backups saved to wrong directory when running as another user, from OpenBSD
  • Fix editing files in a directory without read permission, use relative paths if we cannot get the CWD, from OpenBSD
  • Fixes to warnings from Coverity Scan (static code analyzer):
    • Insecure data handling in getkeyname()
    • Possible NULL pointer deref(s) in dired.c
    • Fix explicit NULL pointer deref in dired.c
    • Fix unchecked return value in delleadwhite() and indent()
    • Fix explicit NULL pointer deref in excline()
    • Fix many dereference after NULL check in veread()
    • Fix possible memory leak in error handling of veread()

v3.0.2 - 2016-08-28

Bugfix release.

Fixes

  • Fix segfault when closing *scratch* buffer with C-x k RET having issued C-x b RET from a fresh started mg.
  • Bring fileio.c up to speed with OpenBSD, r1.102, replacing TMPDIR with the standard /tmp directory for temp files.

v3.0.1 - 2016-05-16

Bugfix release.

Fixes

  • Fix C-a, C-e, C-space, etc. regression when Cscope integration, --disable-cscope or --disable-all is selected.

v3.0 - 2016-05-15

First release based on Mg2a from OpenBSD 5.9. The work on Mg3a, by Bengt Larsson, is not a part of this project. The version number was chosen based on: 2A < 30 < 3A HEX. The OpenBSD Mg is greatly improved over the original Mg2a, from 1986, but does not have the same feature set as Mg3a.

Changes

  • Import mg from OpenBSD 5.9
  • Use libite (-lite) to provide missing OpenBSD/NetBSD API's
  • Add GNU configure and build system for portability to other systems:
    • Detect existence and correct version of libite (v1.6.0 or later)
    • Detect -ltermcap, -ltinfo, or -lcurses. We only use the termcap functionality in Mg, but can link with either of them
    • Detect term.h, we cannot use termcap.h because of cookies
    • Make OpenBSD developed features optional with configure, e.g. integrated ctags and cscope support
    • Add --enable-size-optimizations option
    • Add --with-startup=FILE for alternate init file
  • Conditionalize OpenBSD specific API's and modules, e.g. the pledge() API and the theo.c module ... #ifdef __OpenBSD__
  • Add missing M-x version for compatibility with GNU Emacs
  • Add -h command line option for a simple usage text
  • Change Mg built-in version to use configure script's PACKAGE_STRING rather than hardcoded, and rather outdated, Mg 2a
  • Add LICENSE file, from licensing info (Public Domain) in README
  • Add AUTHORS file, from author listing in README
  • Create README.md from text in README and mg.1 with information about this project and the motivation for it

Fixes

  • Convert from fgetln() to standard POSIX getline()
  • Convert old st_mtimespec to POSIX st_mtim
  • Add workaround for systems missing TCSASOFT flag to tcsetattr()
  • Import SO_NOSIGPIPE patch for OX X from by Han Boetes' Mg porting project http://homepage.boetes.org/software/mg/
  • Encapsulate private globalwddata in optional grep.c module
  • Fix build warnings for missing asprintf() family of C API's
  • Integration fixes:
    • fisdir() already exists in libite
    • makedir() is a libite function, rename to make_dir()
  • Fix unsafe enabling of non-blocking mode on file descriptor used when piping buffer contents (M-|) to an external program.
  • Collect forked off children in M-|, missing waitpid()
  • Fixes for bugs found by Coverity Scan:
    • Fix file descriptor leaks
    • Add missing NULL pointer checks
    • Missing checks for return value from both internal and C library functions. Some simply marked as "don't care"
    • Fix missing initialization of stack variables