feat: add support for opening a specific commit with --Commit/-C

git-open

@@ -17,6 +17,7 @@ git open [remote] [branch]
 
   Available options are
 c,commit!     open current commit
+C,Commit=     open specific commit
 i,issue!      open issues page
 s,suffix=     append this suffix
 f,file=       append this file
@@ -27,8 +28,11 @@ p,print!      just print the url
 # shellcheck source=/dev/null
 SUBDIRECTORY_OK='Yes' . "$(git --exec-path)/git-sh-setup"
 
+function join_by { local IFS="$1"; shift; echo "$*"; }
+
 # Defaults
 is_commit=0
+specific_commit=""
 is_issue=0
 protocol="https"
 print_only=0
@@ -38,6 +42,10 @@ file_flag=""
 while test $# != 0; do
   case "$1" in
   --commit) is_commit=1;;
+  --Commit=*)
+    IFS='=' read -ra specific_commit_flag <<< "$1"
+    specific_commit=$(join_by "=" "${specific_commit_flag[@]:1}")
+    ;;
   --issue) is_issue=1;;
   --suffix=*) suffix_flag="$1";;
   --file=*) file_flag="$1";;
@@ -258,7 +266,14 @@ elif [[ "$domain" =~ cnb\.cool$ ]]; then
 fi
 openurl="$protocol://$domain/$urlpath"
 
-if (( is_commit )); then
+if [[ -n "$specific_commit" ]]; then
+    sha=$(git rev-parse --verify "$specific_commit" 2>/dev/null)
+    if [[ -z "$sha" ]]; then
+      echo "Commit $specific_commit not found" 1>&2
+      exit 1
+    fi
+    openurl="$openurl/commit/$sha"
+elif (( is_commit )); then
     sha=$(git rev-parse HEAD)
     openurl="$openurl/commit/$sha"
 elif [[ $remote_ref != "master" || "$file" ]]; then

test/git-open.bats

@@ -167,6 +167,44 @@ setup() {
   assert_output "https://github.com/paulirish/git-open/commit/${sha}"
 }
 
+@test "gh: git open --Commit=sha (valid)" {
+  git remote set-url origin "github.com:paulirish/git-open.git"
+  # Create a new commit to have a specific SHA
+  echo "content" > testfile
+  git add testfile
+  git commit -m "specific commit"
+  sha=$(git rev-parse HEAD)
+  run ../git-open "--Commit=${sha}"
+  assert_output "https://github.com/paulirish/git-open/commit/${sha}"
+}
+
+@test "gh: git open -C sha (valid)" {
+  git remote set-url origin "github.com:paulirish/git-open.git"
+  echo "content2" > testfile2
+  git add testfile2
+  git commit -m "specific commit 2"
+  sha=$(git rev-parse HEAD)
+  run ../git-open "-C" "${sha}"
+  assert_output "https://github.com/paulirish/git-open/commit/${sha}"
+}
+
+@test "gh: git open --Commit=HEAD~1 (relative ref)" {
+  git remote set-url origin "github.com:paulirish/git-open.git"
+  sha_parent=$(git rev-parse HEAD)
+  echo "content3" > testfile3
+  git add testfile3
+  git commit -m "child commit"
+  run ../git-open "--Commit=HEAD~1"
+  assert_output "https://github.com/paulirish/git-open/commit/${sha_parent}"
+}
+
+@test "gh: git open --Commit=invalid (invalid ref)" {
+  git remote set-url origin "github.com:paulirish/git-open.git"
+  run ../git-open "--Commit=nonexistent_ref"
+  [ "$status" -eq 1 ]
+  assert_output "Commit nonexistent_ref not found"
+}
+
 @test "gh: git open --suffix anySuffix" {
   run ../git-open "--suffix" "anySuffix"
   assert_output "https://github.com/paulirish/git-open/anySuffix"