[PATCH] vcs_info svn: 'Fix set-branch-format' when in subdirs

[Daniel Shahaf <d.s@daniel.shahaf.name>]

The previous code would fail to detect the wcroot with Subversion 1.7+
when cwd is at least two levels below the root (i.e., ../../.svn exists
and ../.svn doesn't), and would then pass to the hook the revision and
basename of cwd rather than of the wcroot.
---

Two caveats:

1. This patch will conflict if applied before the other patch I just
sent.  The conflict is syntactic, not semantic, and only affects hunk
context lines.

2. I haven't tested this patch in any way.

 Functions/VCS_Info/Backends/VCS_INFO_get_data_svn |   22 ++++++++++++++-------
 1 file changed, 15 insertions(+), 7 deletions(-)

diff --git a/Functions/VCS_Info/Backends/VCS_INFO_get_data_svn b/Functions/VCS_Info/Backends/VCS_INFO_get_data_svn
index ae3c499..e56afee 100644
--- a/Functions/VCS_Info/Backends/VCS_INFO_get_data_svn
+++ b/Functions/VCS_Info/Backends/VCS_INFO_get_data_svn
@@ -30,13 +30,21 @@ done
 
 cwdinfo=(${(kv)svninfo})
 
-while [[ -d "${svnbase}/../.svn" ]]; do
-    parentinfo=()
-    ${vcs_comm[cmd]} info --non-interactive "${svnbase}/.." | while IFS=: read a b; do parentinfo[${a// /_}]="${b## #}"; done
-    [[ ${parentinfo[Repository_UUID]} != ${svninfo[Repository_UUID]} ]] && break
-    svninfo=(${(kv)parentinfo})
-    svnbase="${svnbase}/.."
-done
+# Set svnbase to the wcroot path and svninfo to its `svn info`.
+if (( ${+svninfo[Working_Copy_Root_Path]} )); then
+  # svn 1.7+
+  svnbase=${svninfo[Working_Copy_Root_Path]}
+  ${vcs_comm[cmd]} info --non-interactive -- "${svnbase}" | while IFS=: read a b; do svninfo[${a// /_}]="${b## #}"; done
+else
+  # svn 1.0-1.6
+  while [[ -d "${svnbase}/../.svn" ]]; do
+      parentinfo=()
+      ${vcs_comm[cmd]} info --non-interactive -- "${svnbase}/.." | while IFS=: read a b; do parentinfo[${a// /_}]="${b## #}"; done
+      [[ ${parentinfo[Repository_UUID]} != ${svninfo[Repository_UUID]} ]] && break
+      svninfo=(${(kv)parentinfo})
+      svnbase="${svnbase}/.."
+  done
+fi
 
 svnbase="$(VCS_INFO_realpath ${svnbase})"
 
-- 
1.7.10.4