- Memory leak fixes for files.c:do_insertfile(),do_browser(), nano.c:do_spell(), and search.c:do_replace() (David Benbennick)


git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@1449 35c25a1d-7b9e-4130-9fde-d3aeb78583b8

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- nano.c:do_help () - Fix line lengths not being computed properly, causes display glitches most noticeable with < 20 rows.  New function nano.c:line_len(). (David Benbennick)


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- winio.c:nanogetstr() - Remove unnecessary reset of x since it is now handled elsewhere (David Lawrence Ramsey)


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- rcfile.c:colortoint() - Don't bomb after invalid color and print bad color name (David Benbennick). And reset mcolor to -1.


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- nano.1, nano.1.html: - Add initialization file comments, change some options from bracketed to underlined to emphasize that they are not optional


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files.c:do_insertfile() - Add some more checks and fix recursion when toggling multibuffer (David Benbennick)


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- Fix screen getting trashed on signals nano can catch (TERM and HUP).  New global variable curses_ended changes to winio.c:statubar() and nano.c:die()


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- files.c:do_browser() - Fix goto directory operating dir check and tilde expansion (David Benbennick)


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- files.c:do_browse_from() - Fix path checking to fix bad paths, escaping the operating directory, new function readable_dir() (David Benbennick)


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-nano.c:do_justify() - Unset KEEP_CUTBUFFER so nano won't crash with subsequent ^K cuts and justifies (David Benbennick)


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- Fix nano crashing when searching/replacing an invalid regex (try ^*).  Changed regexp_init() to return 1 or 0 based on regcomp()'s return value and search_init to exit with an error message (sorry Jordi)


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- nano.c:do_mouse() - Fix the mouse code to work with lines longer than COLS and with the proper positioning, including special characters (David Benbennick)


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- Fix constant curos updates from obliterating other system messages, and fix statusbar message length. Affects files.c:load_open_file(), nano.c:main(), search.c:findnextstr(), winio.c:statusbar() and do_cursorpos() (David Benbennick)


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- Fix cursor position being saved when escaping out of nanogetstr with keys like ^Y and ^V.  New arg resetpos to nanogetstr(), added static int resetpos in statusq() (bug found by DLR)


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