feat(import-packages): import all branches

scripts/import-packages

@@ -1,5 +1,7 @@
 #!/bin/sh
 
+set -eu
+
 if [ $# -eq 0 ]
 then
   echo "$0 <repository url>..."
@@ -10,25 +12,33 @@ fi
 #
 # For each repository:
 #
-# 1. rewrite history, moving all files into packages/<repository>
-# 2. rename all tags: <tag> → <repository>-<tag>
-# 3. merge with master
+# 1. import all branches and tags as <repository>/*
+# 2. rewrite history, moving all files into packages/<repository>
+# 3. merge and delete <repository>/master
 for url
 do
   pkg=$(basename "$url" .git)
-  [ -d "packages/$pkg" ] || { {
-    [ -f ".git/refs/remotes/$pkg/master" ] || \
-    git remote add "$pkg" "$url"
-  } && {
-    git fetch --no-tags "$pkg" master refs/tags/*:refs/tags/"$pkg"-* && \
-      git filter-branch -f --index-filter '
-        git ls-files -s | \
-          sed "s%\t\"*%&packages/'"$pkg"'/%" | \
-          GIT_INDEX_FILE=$GIT_INDEX_FILE.new \
-          git update-index --index-info && \
-          mv "$GIT_INDEX_FILE.new" "$GIT_INDEX_FILE"
-      ' --tag-name-filter 'cat' "$pkg/master" && \
-      git merge --allow-unrelated-histories "$pkg/master"
-    git remote rm "$pkg"
-  } }
+  if [ -d "packages/$pkg" ]
+  then
+    continue
+  fi
+
+  git remote add "$pkg" "$url"
+  git fetch --no-tags "$pkg" \
+    "refs/heads/*:refs/heads/$pkg/*" \
+    "refs/tags/*:refs/tags/$pkg/*"
+  git remote rm "$pkg"
+
+  git filter-branch -f --index-filter '
+    git ls-files -s | \
+      sed "s%\t\"*%&packages/'"$pkg"'/%" | \
+      GIT_INDEX_FILE=$GIT_INDEX_FILE.new \
+      git update-index --index-info && \
+      if [ -f "$GIT_INDEX_FILE.new" ]; then \
+        mv "$GIT_INDEX_FILE.new" "$GIT_INDEX_FILE"; \
+      fi
+  ' --tag-name-filter 'cat' -- --branches="$pkg/*"
+
+  git merge --allow-unrelated-histories "$pkg/master"
+  git branch -d "$pkg/master"
 done