[PATCH 2/3] vcs_info git: In non-interactive rebases, obtain applied patches' names.

[Daniel Shahaf <danielsh@apache.org>]

---
 .../VCS_Info/Backends/VCS_INFO_get_data_git   | 22 ++++++++++++++-----
 1 file changed, 17 insertions(+), 5 deletions(-)

diff --git a/Functions/VCS_Info/Backends/VCS_INFO_get_data_git b/Functions/VCS_Info/Backends/VCS_INFO_get_data_git
index 6391cd1a6..4731c7400 100644
--- a/Functions/VCS_Info/Backends/VCS_INFO_get_data_git
+++ b/Functions/VCS_Info/Backends/VCS_INFO_get_data_git
@@ -253,11 +253,23 @@ elif [[ -d "${gitdir}/rebase-apply" ]]; then
         local cur=$(< $next)
         local p subject
         # Fake patch names for patches "before" the current patch
-        #
-        # Note: With git 2.24, (( cur == 1 )), so the loop body never runs.
-        for ((p = 1; p < cur; p++)); do
-            printf -v "git_patches_applied[$p]"  "%04d ?" "$p"
-        done
+        if [[ -r ${patchdir}/rewritten ]]; then
+            if zstyle -t ":vcs_info:${vcs}:${usercontext}:${rrn}" use-simple; then
+                git_patches_applied=( ${${(f)"$(<${patchdir}/rewritten)"}// */' ?'} )
+            else
+                git_patches_applied=(
+                    ${(f)"$(${vcs_comm[cmd]} log --no-walk=unsorted --pretty='%h %s' ${${(f)"$(<${patchdir}/rewritten)"}%% *} --)"}
+                )
+            fi
+        else
+            # Compatibility with old git.  In 2.11 and 2.24, at least,
+            # (( cur == 1 )), so the loop body would never run.  However, both
+            # of these versions have original-commit and orig-head and would
+            # take the 'if' branch, rather than this 'else' branch.
+            for ((p = 1; p < cur; p++)); do
+                printf -v "git_patches_applied[$p]"  "%04d ?" "$p"
+            done
+        fi
         # Set $subject to the info for the current patch
         if [[ -f "${patchdir}/msg-clean" ]]; then
             subject="${$(< "${patchdir}/msg-clean")[(f)1]}"