Merge branch 'jc/am-3-nonstandard-popt' into maint

The code to synthesize the fake ancestor tree used by 3-way merge
fallback in "git am" was not prepared to read a patch created with
a non-standard -p<num> value.

* jc/am-3-nonstandard-popt:
  test: "am -3" can accept non-standard -p<num>
  am -3: allow nonstandard -p<num> option

1 files changed, 7 insertions, 4 deletions

diff --git a/git-am.sh b/git-am.sh
index f43a75b04b..cb833e217a 100755
--- a/git-am.sh
+++ b/git-am.sh
@@ -127,15 +127,18 @@ fall_back_3way () {
     mkdir "$dotest/patch-merge-tmp-dir"
 
     # First see if the patch records the index info that we can use.
-    git apply --build-fake-ancestor "$dotest/patch-merge-tmp-index" \
-	"$dotest/patch" &&
+    cmd="git apply $git_apply_opt --build-fake-ancestor" &&
+    cmd="$cmd "'"$dotest/patch-merge-tmp-index" "$dotest/patch"' &&
+    eval "$cmd" &&
     GIT_INDEX_FILE="$dotest/patch-merge-tmp-index" \
     git write-tree >"$dotest/patch-merge-base+" ||
     cannot_fallback "$(gettext "Repository lacks necessary blobs to fall back on 3-way merge.")"
 
     say Using index info to reconstruct a base tree...
-    if GIT_INDEX_FILE="$dotest/patch-merge-tmp-index" \
-	git apply --cached <"$dotest/patch"
+
+    cmd='GIT_INDEX_FILE="$dotest/patch-merge-tmp-index"'
+    cmd="$cmd git apply --cached $git_apply_opt"' <"$dotest/patch"'
+    if eval "$cmd"
     then
 	mv "$dotest/patch-merge-base+" "$dotest/patch-merge-base"
 	mv "$dotest/patch-merge-tmp-index" "$dotest/patch-merge-index"