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@@ -0,0 +1,524 @@
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+ BASH PATCH REPORT
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+ =================
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+
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+Bash-Release: 4.2
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+Patch-ID: bash42-029
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+
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+Bug-Reported-by: "Michael Kalisz" <michael@kalisz.homelinux.net>
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+Bug-Reference-ID: <50241.78.69.11.112.1298585641.squirrel@kalisz.homelinux.net>
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+Bug-Reference-URL: http://lists.gnu.org/archive/html/bug-bash/2011-02/msg00274.html
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+
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+Bug-Description:
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+
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+Bash-4.2 tries to leave completed directory names as the user typed them,
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+without expanding them to a full pathname. One effect of this is that
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+shell variables used in pathnames being completed (e.g., $HOME) are left
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+unchanged, but the `$' is quoted by readline because it is a special
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+character to the shell.
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+
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+This patch introduces two things:
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+
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+1. A new shell option, `direxpand', which, if set, attempts to emulate the
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+ bash-4.1 behavior of expanding words to full pathnames during
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+ completion;
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+2. A set of heuristics that reduce the number of times special characters
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+ such as `$' are quoted when the directory name is not expanded.
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+
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+Patch (apply with `patch -p0'):
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+
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+diff -NrC 2 ../bash-4.2-patched/bashline.c ./bashline.c
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+*** ../bash-4.2-patched/bashline.c 2011-01-16 15:32:47.000000000 -0500
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+--- ./bashline.c 2012-05-07 16:27:18.000000000 -0400
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+***************
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+*** 122,125 ****
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+--- 122,128 ----
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+ static int bash_push_line __P((void));
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+
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++ static rl_icppfunc_t *save_directory_hook __P((void));
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++ static void reset_directory_hook __P((rl_icppfunc_t *));
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++
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+ static void cleanup_expansion_error __P((void));
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+ static void maybe_make_readline_line __P((char *));
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+***************
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+*** 244,251 ****
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+--- 247,261 ----
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+ int dircomplete_spelling = 0;
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+
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++ /* Expand directory names during word/filename completion. */
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++ int dircomplete_expand = 0;
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++ int dircomplete_expand_relpath = 0;
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++
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+ static char *bash_completer_word_break_characters = " \t\n\"'@><=;|&(:";
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+ static char *bash_nohostname_word_break_characters = " \t\n\"'><=;|&(:";
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+ /* )) */
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+
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++ static const char *default_filename_quote_characters = " \t\n\\\"'@<>=;|&()#$`?*[!:{~"; /*}*/
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++ static char *custom_filename_quote_characters = 0;
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++
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+ static rl_hook_func_t *old_rl_startup_hook = (rl_hook_func_t *)NULL;
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+
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+***************
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+*** 502,506 ****
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+ /* Tell the completer that we might want to follow symbolic links or
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+ do other expansion on directory names. */
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+! rl_directory_rewrite_hook = bash_directory_completion_hook;
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+
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+ rl_filename_rewrite_hook = bash_filename_rewrite_hook;
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+--- 512,516 ----
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+ /* Tell the completer that we might want to follow symbolic links or
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+ do other expansion on directory names. */
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+! set_directory_hook ();
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+
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+ rl_filename_rewrite_hook = bash_filename_rewrite_hook;
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+***************
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+*** 530,534 ****
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+
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+ /* characters that need to be quoted when appearing in filenames. */
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+! rl_filename_quote_characters = " \t\n\\\"'@<>=;|&()#$`?*[!:{~"; /*}*/
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+
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+ rl_filename_quoting_function = bash_quote_filename;
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+--- 540,544 ----
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+
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+ /* characters that need to be quoted when appearing in filenames. */
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+! rl_filename_quote_characters = default_filename_quote_characters;
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+
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+ rl_filename_quoting_function = bash_quote_filename;
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+***************
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+*** 565,570 ****
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+ rl_attempted_completion_function = attempt_shell_completion;
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+ rl_completion_entry_function = NULL;
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+- rl_directory_rewrite_hook = bash_directory_completion_hook;
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+ rl_ignore_some_completions_function = filename_completion_ignore;
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+ }
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+
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+--- 575,582 ----
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+ rl_attempted_completion_function = attempt_shell_completion;
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+ rl_completion_entry_function = NULL;
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+ rl_ignore_some_completions_function = filename_completion_ignore;
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++ rl_filename_quote_characters = default_filename_quote_characters;
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++
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++ set_directory_hook ();
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+ }
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+
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+***************
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+*** 1280,1283 ****
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+--- 1292,1298 ----
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+ rl_ignore_some_completions_function = filename_completion_ignore;
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+
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++ rl_filename_quote_characters = default_filename_quote_characters;
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++ set_directory_hook ();
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++
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+ /* Determine if this could be a command word. It is if it appears at
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+ the start of the line (ignoring preceding whitespace), or if it
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+***************
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+*** 1592,1595 ****
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+--- 1607,1616 ----
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+ else
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+ {
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++ if (dircomplete_expand && dot_or_dotdot (filename_hint))
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++ {
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++ dircomplete_expand = 0;
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++ set_directory_hook ();
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++ dircomplete_expand = 1;
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++ }
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+ mapping_over = 4;
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+ goto inner;
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+***************
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+*** 1792,1795 ****
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+--- 1813,1819 ----
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+ inner:
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+ val = rl_filename_completion_function (filename_hint, istate);
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++ if (mapping_over == 4 && dircomplete_expand)
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++ set_directory_hook ();
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++
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+ istate = 1;
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+
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+***************
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+*** 2694,2697 ****
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+--- 2718,2767 ----
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+ }
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+
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++ /* Functions to save and restore the appropriate directory hook */
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++ /* This is not static so the shopt code can call it */
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++ void
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++ set_directory_hook ()
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++ {
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++ if (dircomplete_expand)
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++ {
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++ rl_directory_completion_hook = bash_directory_completion_hook;
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++ rl_directory_rewrite_hook = (rl_icppfunc_t *)0;
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++ }
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++ else
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++ {
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++ rl_directory_rewrite_hook = bash_directory_completion_hook;
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++ rl_directory_completion_hook = (rl_icppfunc_t *)0;
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++ }
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++ }
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++
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++ static rl_icppfunc_t *
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++ save_directory_hook ()
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++ {
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++ rl_icppfunc_t *ret;
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++
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++ if (dircomplete_expand)
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++ {
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++ ret = rl_directory_completion_hook;
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++ rl_directory_completion_hook = (rl_icppfunc_t *)NULL;
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++ }
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++ else
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++ {
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++ ret = rl_directory_rewrite_hook;
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++ rl_directory_rewrite_hook = (rl_icppfunc_t *)NULL;
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++ }
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++
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++ return ret;
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++ }
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++
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++ static void
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++ restore_directory_hook (hookf)
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++ rl_icppfunc_t *hookf;
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++ {
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++ if (dircomplete_expand)
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++ rl_directory_completion_hook = hookf;
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++ else
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++ rl_directory_rewrite_hook = hookf;
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++ }
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++
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+ /* Handle symbolic link references and other directory name
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+ expansions while hacking completion. This should return 1 if it modifies
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+***************
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+*** 2703,2720 ****
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+ {
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+ char *local_dirname, *new_dirname, *t;
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+! int return_value, should_expand_dirname;
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+ WORD_LIST *wl;
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+ struct stat sb;
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+
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+! return_value = should_expand_dirname = 0;
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+ local_dirname = *dirname;
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+
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+! if (mbschr (local_dirname, '$'))
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+! should_expand_dirname = 1;
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+ else
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+ {
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+ t = mbschr (local_dirname, '`');
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+ if (t && unclosed_pair (local_dirname, strlen (local_dirname), "`") == 0)
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+! should_expand_dirname = 1;
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+ }
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+
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+--- 2773,2801 ----
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+ {
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+ char *local_dirname, *new_dirname, *t;
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+! int return_value, should_expand_dirname, nextch, closer;
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+ WORD_LIST *wl;
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+ struct stat sb;
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+
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+! return_value = should_expand_dirname = nextch = closer = 0;
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+ local_dirname = *dirname;
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+
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+! if (t = mbschr (local_dirname, '$'))
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+! {
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+! should_expand_dirname = '$';
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+! nextch = t[1];
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+! /* Deliberately does not handle the deprecated $[...] arithmetic
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+! expansion syntax */
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+! if (nextch == '(')
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+! closer = ')';
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+! else if (nextch == '{')
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+! closer = '}';
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+! else
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+! nextch = 0;
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+! }
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+ else
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+ {
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+ t = mbschr (local_dirname, '`');
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+ if (t && unclosed_pair (local_dirname, strlen (local_dirname), "`") == 0)
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+! should_expand_dirname = '`';
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+ }
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+
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+***************
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+*** 2740,2743 ****
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+--- 2821,2841 ----
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+ dispose_words (wl);
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+ local_dirname = *dirname;
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++ /* XXX - change rl_filename_quote_characters here based on
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++ should_expand_dirname/nextch/closer. This is the only place
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++ custom_filename_quote_characters is modified. */
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++ if (rl_filename_quote_characters && *rl_filename_quote_characters)
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++ {
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++ int i, j, c;
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++ i = strlen (default_filename_quote_characters);
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++ custom_filename_quote_characters = xrealloc (custom_filename_quote_characters, i+1);
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++ for (i = j = 0; c = default_filename_quote_characters[i]; i++)
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++ {
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++ if (c == should_expand_dirname || c == nextch || c == closer)
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++ continue;
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++ custom_filename_quote_characters[j++] = c;
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++ }
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++ custom_filename_quote_characters[j] = '\0';
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++ rl_filename_quote_characters = custom_filename_quote_characters;
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++ }
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+ }
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+ else
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+***************
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+*** 2759,2762 ****
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+--- 2857,2871 ----
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+ }
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+
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++ /* no_symbolic_links == 0 -> use (default) logical view of the file system.
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++ local_dirname[0] == '.' && local_dirname[1] == '/' means files in the
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++ current directory (./).
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++ local_dirname[0] == '.' && local_dirname[1] == 0 means relative pathnames
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++ in the current directory (e.g., lib/sh).
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++ XXX - should we do spelling correction on these? */
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++
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++ /* This is test as it was in bash-4.2: skip relative pathnames in current
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++ directory. Change test to
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++ (local_dirname[0] != '.' || (local_dirname[1] && local_dirname[1] != '/'))
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++ if we want to skip paths beginning with ./ also. */
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+ if (no_symbolic_links == 0 && (local_dirname[0] != '.' || local_dirname[1]))
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+ {
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+***************
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+*** 2764,2767 ****
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+--- 2873,2885 ----
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+ int len1, len2;
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+
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++ /* If we have a relative path
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++ (local_dirname[0] != '/' && local_dirname[0] != '.')
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++ that is canonical after appending it to the current directory, then
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++ temp1 = temp2+'/'
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++ That is,
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++ strcmp (temp1, temp2) == 0
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++ after adding a slash to temp2 below. It should be safe to not
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++ change those.
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++ */
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+ t = get_working_directory ("symlink-hook");
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+ temp1 = make_absolute (local_dirname, t);
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+***************
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+*** 2798,2802 ****
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+ }
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+ }
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+! return_value |= STREQ (local_dirname, temp2) == 0;
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+ free (local_dirname);
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+ *dirname = temp2;
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+--- 2916,2928 ----
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+ }
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+ }
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+!
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+! /* dircomplete_expand_relpath == 0 means we want to leave relative
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+! pathnames that are unchanged by canonicalization alone.
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+! *local_dirname != '/' && *local_dirname != '.' == relative pathname
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+! (consistent with general.c:absolute_pathname())
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+! temp1 == temp2 (after appending a slash to temp2) means the pathname
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+! is not changed by canonicalization as described above. */
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+! if (dircomplete_expand_relpath || ((local_dirname[0] != '/' && local_dirname[0] != '.') && STREQ (temp1, temp2) == 0))
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+! return_value |= STREQ (local_dirname, temp2) == 0;
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+ free (local_dirname);
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+ *dirname = temp2;
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+***************
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+*** 3003,3012 ****
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+ orig_func = rl_completion_entry_function;
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+ orig_attempt_func = rl_attempted_completion_function;
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+- orig_dir_func = rl_directory_rewrite_hook;
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+ orig_ignore_func = rl_ignore_some_completions_function;
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+ orig_rl_completer_word_break_characters = rl_completer_word_break_characters;
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+ rl_completion_entry_function = rl_filename_completion_function;
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+ rl_attempted_completion_function = (rl_completion_func_t *)NULL;
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+- rl_directory_rewrite_hook = (rl_icppfunc_t *)NULL;
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+ rl_ignore_some_completions_function = filename_completion_ignore;
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+ rl_completer_word_break_characters = " \t\n\"\'";
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+--- 3129,3139 ----
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+ orig_func = rl_completion_entry_function;
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+ orig_attempt_func = rl_attempted_completion_function;
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+ orig_ignore_func = rl_ignore_some_completions_function;
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+ orig_rl_completer_word_break_characters = rl_completer_word_break_characters;
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++
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++ orig_dir_func = save_directory_hook ();
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++
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+ rl_completion_entry_function = rl_filename_completion_function;
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+ rl_attempted_completion_function = (rl_completion_func_t *)NULL;
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+ rl_ignore_some_completions_function = filename_completion_ignore;
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+ rl_completer_word_break_characters = " \t\n\"\'";
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+***************
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+*** 3016,3023 ****
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+ rl_completion_entry_function = orig_func;
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+ rl_attempted_completion_function = orig_attempt_func;
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+- rl_directory_rewrite_hook = orig_dir_func;
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+ rl_ignore_some_completions_function = orig_ignore_func;
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+ rl_completer_word_break_characters = orig_rl_completer_word_break_characters;
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+
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+ return r;
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+ }
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+--- 3143,3151 ----
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+ rl_completion_entry_function = orig_func;
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+ rl_attempted_completion_function = orig_attempt_func;
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+ rl_ignore_some_completions_function = orig_ignore_func;
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+ rl_completer_word_break_characters = orig_rl_completer_word_break_characters;
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+
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++ restore_directory_hook (orig_dir_func);
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++
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+ return r;
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+ }
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+diff -NrC 2 ../bash-4.2-patched/bashline.h ./bashline.h
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+*** ../bash-4.2-patched/bashline.h 2009-01-04 14:32:22.000000000 -0500
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+--- ./bashline.h 2012-05-07 16:27:18.000000000 -0400
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+***************
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+*** 34,41 ****
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+--- 34,46 ----
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+ extern int bash_re_edit __P((char *));
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+
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++ extern void bashline_set_event_hook __P((void));
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++ extern void bashline_reset_event_hook __P((void));
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++
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+ extern int bind_keyseq_to_unix_command __P((char *));
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+
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+ extern char **bash_default_completion __P((const char *, int, int, int, int));
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+
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++ void set_directory_hook __P((void));
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++
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+ /* Used by programmable completion code. */
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+ extern char *command_word_completion_function __P((const char *, int));
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+diff -NrC 2 ../bash-4.2-patched/builtins/shopt.def ./builtins/shopt.def
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+*** ../bash-4.2-patched/builtins/shopt.def 2010-07-02 22:42:44.000000000 -0400
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+--- ./builtins/shopt.def 2012-05-07 16:27:18.000000000 -0400
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+***************
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+*** 62,65 ****
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+--- 62,69 ----
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+ #include "bashgetopt.h"
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+
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++ #if defined (READLINE)
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++ # include "../bashline.h"
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++ #endif
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++
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+ #if defined (HISTORY)
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+ # include "../bashhist.h"
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|
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+***************
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+*** 95,99 ****
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+ extern int no_empty_command_completion;
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+ extern int force_fignore;
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+! extern int dircomplete_spelling;
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+
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+ extern int enable_hostname_completion __P((int));
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+--- 99,103 ----
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+ extern int no_empty_command_completion;
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+ extern int force_fignore;
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+! extern int dircomplete_spelling, dircomplete_expand;
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+
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+ extern int enable_hostname_completion __P((int));
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+***************
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+*** 122,125 ****
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|
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+--- 126,133 ----
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|
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+ #endif
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+
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|
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++ #if defined (READLINE)
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|
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++ static int shopt_set_complete_direxpand __P((char *, int));
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++ #endif
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++
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+ static int shopt_login_shell;
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+ static int shopt_compat31;
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|
|
+***************
|
|
|
+*** 151,154 ****
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|
|
+--- 159,163 ----
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|
|
+ { "compat41", &shopt_compat41, set_compatibility_level },
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|
|
+ #if defined (READLINE)
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|
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++ { "direxpand", &dircomplete_expand, shopt_set_complete_direxpand },
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|
+ { "dirspell", &dircomplete_spelling, (shopt_set_func_t *)NULL },
|
|
|
+ #endif
|
|
|
+***************
|
|
|
+*** 536,539 ****
|
|
|
+--- 545,559 ----
|
|
|
+ }
|
|
|
+
|
|
|
++ #if defined (READLINE)
|
|
|
++ static int
|
|
|
++ shopt_set_complete_direxpand (option_name, mode)
|
|
|
++ char *option_name;
|
|
|
++ int mode;
|
|
|
++ {
|
|
|
++ set_directory_hook ();
|
|
|
++ return 0;
|
|
|
++ }
|
|
|
++ #endif
|
|
|
++
|
|
|
+ #if defined (RESTRICTED_SHELL)
|
|
|
+ /* Don't allow the value of restricted_shell to be modified. */
|
|
|
+Binary files ../bash-4.2-patched/doc/._bashref.pdf and ./doc/._bashref.pdf differ
|
|
|
+diff -NrC 2 ../bash-4.2-patched/doc/bash.1 ./doc/bash.1
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|
|
+*** ../bash-4.2-patched/doc/bash.1 2011-01-16 15:31:39.000000000 -0500
|
|
|
+--- ./doc/bash.1 2012-05-07 16:27:18.000000000 -0400
|
|
|
+***************
|
|
|
+*** 8949,8952 ****
|
|
|
+--- 8949,8962 ----
|
|
|
+ The default bash behavior remains as in previous versions.
|
|
|
+ .TP 8
|
|
|
++ .B direxpand
|
|
|
++ If set,
|
|
|
++ .B bash
|
|
|
++ replaces directory names with the results of word expansion when performing
|
|
|
++ filename completion. This changes the contents of the readline editing
|
|
|
++ buffer.
|
|
|
++ If not set,
|
|
|
++ .B bash
|
|
|
++ attempts to preserve what the user typed.
|
|
|
++ .TP 8
|
|
|
+ .B dirspell
|
|
|
+ If set,
|
|
|
+diff -NrC 2 ../bash-4.2-patched/doc/bashref.texi ./doc/bashref.texi
|
|
|
+*** ../bash-4.2-patched/doc/bashref.texi 2011-01-16 15:31:57.000000000 -0500
|
|
|
+--- ./doc/bashref.texi 2012-05-07 16:27:18.000000000 -0400
|
|
|
+***************
|
|
|
+*** 4536,4539 ****
|
|
|
+--- 4536,4546 ----
|
|
|
+ The default Bash behavior remains as in previous versions.
|
|
|
+
|
|
|
++ @item direxpand
|
|
|
++ If set, Bash
|
|
|
++ replaces directory names with the results of word expansion when performing
|
|
|
++ filename completion. This changes the contents of the readline editing
|
|
|
++ buffer.
|
|
|
++ If not set, Bash attempts to preserve what the user typed.
|
|
|
++
|
|
|
+ @item dirspell
|
|
|
+ If set, Bash
|
|
|
+diff -NrC 2 ../bash-4.2-patched/tests/shopt.right ./tests/shopt.right
|
|
|
+*** ../bash-4.2-patched/tests/shopt.right 2010-07-02 23:36:30.000000000 -0400
|
|
|
+--- ./tests/shopt.right 2012-05-07 16:27:18.000000000 -0400
|
|
|
+***************
|
|
|
+*** 13,16 ****
|
|
|
+--- 13,17 ----
|
|
|
+ shopt -u compat40
|
|
|
+ shopt -u compat41
|
|
|
++ shopt -u direxpand
|
|
|
+ shopt -u dirspell
|
|
|
+ shopt -u dotglob
|
|
|
+***************
|
|
|
+*** 69,72 ****
|
|
|
+--- 70,74 ----
|
|
|
+ shopt -u compat40
|
|
|
+ shopt -u compat41
|
|
|
++ shopt -u direxpand
|
|
|
+ shopt -u dirspell
|
|
|
+ shopt -u dotglob
|
|
|
+***************
|
|
|
+*** 102,105 ****
|
|
|
+--- 104,108 ----
|
|
|
+ compat40 off
|
|
|
+ compat41 off
|
|
|
++ direxpand off
|
|
|
+ dirspell off
|
|
|
+ dotglob off
|
|
|
+*** ../bash-4.2-patched/patchlevel.h Sat Jun 12 20:14:48 2010
|
|
|
+--- ./patchlevel.h Thu Feb 24 21:41:34 2011
|
|
|
+***************
|
|
|
+*** 26,30 ****
|
|
|
+ looks for to find the patch level (for the sccs version string). */
|
|
|
+
|
|
|
+! #define PATCHLEVEL 28
|
|
|
+
|
|
|
+ #endif /* _PATCHLEVEL_H_ */
|
|
|
+--- 26,30 ----
|
|
|
+ looks for to find the patch level (for the sccs version string). */
|
|
|
+
|
|
|
+! #define PATCHLEVEL 29
|
|
|
+
|
|
|
+ #endif /* _PATCHLEVEL_H_ */
|
Gustavo Zacarias