bash-custom-action/bash-4.0.24-globstar-nulldir.patch

100 lines
3.5 KiB
Diff

| Matt Zyzik wrote:
| > All,
| >
| > Previously, the behavior of globstar mimicked that of ksh/zsh for such a
| > command: "ls -adl **/*.cs".
| >
| > Now I've upgraded to Bash 4.0.24 from Bash 4.0.17 and the behavior is
| > different (seemingly incorrect). Previously, the above-mentioned command
| > would list all *.cs files in the current directory and all
| > subdirectories. With the latest Bash, it only lists *.cs files in
| > subdirectories. The *.cs files in the current working directory are
| > ignored.
| >
| > I think this is a bug. Again, "ls -adl **/*.cs" is now _not_ picking up
| > *.cs files in the current working directory.
|
| OK. I finally had some time to look at this.
|
| The issue is that you can't always add a null placeholder for the current
| directory (the original bash-4.0 code) or never add one (patch 24). You
| have to add one in certain circumstances, when it gets handled later in
| the process.
|
| Try the attached patch. It undoes portions of patch 24 and uses a
| different scheme to figure out when to add the null placeholder. It
| seems to work for all cases without any regressions.
|
| Chet
|
*** ../bash-4.0-patched/lib/glob/glob.c 2009-05-22 12:32:26.000000000 -0400
--- lib/glob/glob.c 2009-05-22 12:35:55.000000000 -0400
***************
*** 666,672 ****
}
! /* compat: if GX_ALLDIRS, add the passed directory also, but don't add an
! empty directory name. */
! if (add_current && (flags & GX_NULLDIR) == 0)
{
sdlen = strlen (dir);
--- 666,673 ----
}
! /* compat: if GX_ADDCURDIR, add the passed directory also. Add an empty
! directory name as a placeholder if GX_NULLDIR (in which case the passed
! directory name is "."). */
! if (add_current)
{
sdlen = strlen (dir);
***************
*** 680,684 ****
nextlink->next = lastlink;
lastlink = nextlink;
! bcopy (dir, nextname, sdlen + 1);
++count;
}
--- 681,688 ----
nextlink->next = lastlink;
lastlink = nextlink;
! if (flags & GX_NULLDIR)
! nextname[0] = '\0';
! else
! bcopy (dir, nextname, sdlen + 1);
++count;
}
***************
*** 1008,1016 ****
/* Just return what glob_vector () returns appended to the
directory name. */
dflags = flags & ~GX_MARKDIRS;
if (directory_len == 0)
dflags |= GX_NULLDIR;
if ((flags & GX_GLOBSTAR) && filename[0] == '*' && filename[1] == '*' && filename[2] == '\0')
! dflags |= GX_ALLDIRS|GX_ADDCURDIR;
temp_results = glob_vector (filename,
(directory_len == 0 ? "." : directory_name),
--- 1012,1033 ----
/* Just return what glob_vector () returns appended to the
directory name. */
+ /* If flags & GX_ALLDIRS, we're called recursively */
dflags = flags & ~GX_MARKDIRS;
if (directory_len == 0)
dflags |= GX_NULLDIR;
if ((flags & GX_GLOBSTAR) && filename[0] == '*' && filename[1] == '*' && filename[2] == '\0')
! {
! dflags |= GX_ALLDIRS|GX_ADDCURDIR;
! #if 0
! /* If we want all directories (dflags & GX_ALLDIRS) and we're not
! being called recursively as something like `echo **/*.o'
! ((flags & GX_ALLDIRS) == 0), we want to prevent glob_vector from
! adding a null directory name to the front of the temp_results
! array. We turn off ADDCURDIR if not called recursively and
! dlen == 0 */
! #endif
! if (directory_len == 0 && (flags & GX_ALLDIRS) == 0)
! dflags &= ~GX_ADDCURDIR;
! }
temp_results = glob_vector (filename,
(directory_len == 0 ? "." : directory_name),