bash/bash-4.4-patch-7.patch

From 4f747edc625815f449048579f6e65869914dd715 Mon Sep 17 00:00:00 2001
From: Chet Ramey <chet.ramey@case.edu>
Date: Fri, 20 Jan 2017 11:47:55 -0500
Subject: [PATCH] Bash-4.4 patch 7

---
 bashline.c   | 22 ++++++++++++----------
 patchlevel.h |  2 +-
 subst.c      |  4 ++++
 3 files changed, 17 insertions(+), 11 deletions(-)

diff --git a/bashline.c b/bashline.c
index f4fe9f1..0275844 100644
--- a/bashline.c
+++ b/bashline.c
@@ -142,7 +142,7 @@ static int executable_completion __P((const char *, int));
 static rl_icppfunc_t *save_directory_hook __P((void));
 static void restore_directory_hook __P((rl_icppfunc_t));
 
-static int directory_exists __P((const char *));
+static int directory_exists __P((const char *, int));
 
 static void cleanup_expansion_error __P((void));
 static void maybe_make_readline_line __P((char *));
@@ -3102,18 +3102,20 @@ restore_directory_hook (hookf)
     rl_directory_rewrite_hook = hookf;
 }
 
-/* Check whether not the (dequoted) version of DIRNAME, with any trailing slash
-   removed, exists. */
+/* Check whether not DIRNAME, with any trailing slash removed, exists.  If
+   SHOULD_DEQUOTE is non-zero, we dequote the directory name first. */
 static int
-directory_exists (dirname)
+directory_exists (dirname, should_dequote)
      const char *dirname;
+     int should_dequote;
 {
   char *new_dirname;
   int dirlen, r;
   struct stat sb;
 
-  /* First, dequote the directory name */
-  new_dirname = bash_dequote_filename ((char *)dirname, rl_completion_quote_character);
+  /* We save the string and chop the trailing slash because stat/lstat behave
+     inconsistently if one is present. */
+  new_dirname = should_dequote ? bash_dequote_filename ((char *)dirname, rl_completion_quote_character) : savestring (dirname);
   dirlen = STRLEN (new_dirname);
   if (new_dirname[dirlen - 1] == '/')
     new_dirname[dirlen - 1] = '\0';
@@ -3145,7 +3147,7 @@ bash_filename_stat_hook (dirname)
   else if (t = mbschr (local_dirname, '`'))	/* XXX */
     should_expand_dirname = '`';
 
-  if (should_expand_dirname && directory_exists (local_dirname))
+  if (should_expand_dirname && directory_exists (local_dirname, 0))
     should_expand_dirname = 0;
   
   if (should_expand_dirname)  
@@ -3155,7 +3157,7 @@ bash_filename_stat_hook (dirname)
 	 have to worry about restoring this setting. */
       global_nounset = unbound_vars_is_error;
       unbound_vars_is_error = 0;
-      wl = expand_prompt_string (new_dirname, 0, W_NOCOMSUB|W_COMPLETE);	/* does the right thing */
+      wl = expand_prompt_string (new_dirname, 0, W_NOCOMSUB|W_NOPROCSUB|W_COMPLETE);	/* does the right thing */
       unbound_vars_is_error = global_nounset;
       if (wl)
 	{
@@ -3244,13 +3246,13 @@ bash_directory_completion_hook (dirname)
 	should_expand_dirname = '`';
     }
 
-  if (should_expand_dirname && directory_exists (local_dirname))
+  if (should_expand_dirname && directory_exists (local_dirname, 1))
     should_expand_dirname = 0;
 
   if (should_expand_dirname)  
     {
       new_dirname = savestring (local_dirname);
-      wl = expand_prompt_string (new_dirname, 0, W_NOCOMSUB|W_COMPLETE);	/* does the right thing */
+      wl = expand_prompt_string (new_dirname, 0, W_NOCOMSUB|W_NOPROCSUB|W_COMPLETE);	/* does the right thing */
       if (wl)
 	{
 	  *dirname = string_list (wl);
diff --git a/patchlevel.h b/patchlevel.h
index 14bff9f..deb9c5b 100644
--- a/patchlevel.h
+++ b/patchlevel.h
@@ -25,6 +25,6 @@
    regexp `^#define[ 	]*PATCHLEVEL', since that's what support/mkversion.sh
    looks for to find the patch level (for the sccs version string). */
 
-#define PATCHLEVEL 6
+#define PATCHLEVEL 7
 
 #endif /* _PATCHLEVEL_H_ */
diff --git a/subst.c b/subst.c
index 298187d..027a13e 100644
--- a/subst.c
+++ b/subst.c
@@ -9458,6 +9458,10 @@ add_twochars:
 		tword->flags |= word->flags & (W_ASSIGNARG|W_ASSIGNRHS);	/* affects $@ */
 	      if (word->flags & W_COMPLETE)
 		tword->flags |= W_COMPLETE;	/* for command substitutions */
+	      if (word->flags & W_NOCOMSUB)
+		tword->flags |= W_NOCOMSUB;
+	      if (word->flags & W_NOPROCSUB)
+		tword->flags |= W_NOPROCSUB;
 
 	      temp = (char *)NULL;
 
-- 
2.9.3