Mg v4.6

Changes

• Version control for git on C-x v, as in GNU Emacs: diff, log, annotate, old revisions, add, commit and revert, colored like git. The mode line shows the branch, Git-main or Git:main with changes. --disable-vc builds without it. See VERSION CONTROL in mg(1)
• Emacs TAGS files are read too, and a tag defined in several places is listed in an *xref* window. New C-x 4 . and tags-apropos
• cscope only needs cscope itself: C-c s I indexes the tree, and matches are listed in *xref*. New C-c s = and C-c s u
• isearch and query-replace highlight the matches, and query-replace offers the last replacement as its default
• Pop-ups open side by side when the window is wide enough
• A compressed file gets the mode of its name without .gz
• M-g is a prefix key, as in Emacs: M-g c, M-g TAB, M-g n and M-g p, and new previous-error
• Prompts keep the windows up to date while they wait

Fixes

• Fix #48: build on illumos, where ncurses/curses.h defines macros clashing with mg's own functions
• Fix the ~/.mg fallback, which never loaded on a default build, by Nick Ermakov, PR #49
• Show the cursor at startup, also when the terminal had hidden it, by Miki Yutani, PR #50
• C-v and M-v in line-wrap-mode page by screen rows, by Stefano Taverni, PR #51
• Auto fill and M-q count display columns, not bytes, by Nick Ermakov, PR #52 and PR #53
• Build on NetBSD, whose tparm() takes ten parameters, by Christof Meerwald, PR #54
• configure on Solaris no longer throws away LIBS and CPPFLAGS
• Long tag names no longer overflow the prompt
• cscope no longer runs searches through the shell
• A FIFO named like a tags file or .git no longer hangs mg
• Fix crashes in next-error and git-commit-mode after their window was closed
• grep and compile output no longer ends each line in ^J
• M-. offers the word at point, not the text before it
• An arrow key ends query-replace instead of inserting its codes