fixed issue with branches that contain other branch names

When a remote branch begins with or ends with the local branch name then
the commits against diff functions can report the commits for the remote
branch instead of your local branch, e.g.:

I have local branch `foo` with 1 commit ahead of master and a remote
branch `foobar` with 2 ahead of master. The prompt will report 2 commits
instead of the true 1 commit because the `grep $branch_name` returns the
`foobar` branch.

Simple fix is to ensure we grep for the full `/<branch_name>$` so:

branch_name = `foo`

`origin/foo` matches
`other/foo` matches
`origin/foobar` doesn't match
`origin/barfoo` doesn't match

2 files changed, 69 insertions, 1 deletions

diff --git a/git-base.sh b/git-base.sh
index 950422d..eb91fc8 100755
--- a/git-base.sh
+++ b/git-base.sh
@@ -122,7 +122,7 @@ readable_branch_name() {
 }
 
 remote_branch_name() {
-  local localRef="$(branch_name)"
+  local localRef="\/$(branch_name)$"
   if [[ -n "$localRef" ]]; then
     local remoteBranch="$(git for-each-ref --format='%(upstream:short)' refs/heads $localRef 2>/dev/null | grep $localRef)"
     if [[ -n $remoteBranch ]]; then
diff --git a/test-commits.sh b/test-commits.sh
index 340365d..01b07d3 100755
--- a/test-commits.sh
+++ b/test-commits.sh
@@ -189,6 +189,74 @@ test_remote_behind_master() {
   rm_tmp
 }
 
+test_remote_branch_starts_with_local_branch_name() {
+  cd_to_tmp "remote"
+  git init --bare --quiet
+  remoteLocation="$(pwd)"
+
+  cd_to_tmp "local"
+  git init --quiet
+  git remote add origin $remoteLocation
+  git fetch origin --quiet
+
+  git checkout -b master --quiet
+  touch README
+  git add README
+  git commit -m "initial commit" --quiet
+
+  git push --quiet -u origin master >/dev/null
+  git reset --quiet --hard HEAD
+
+  git checkout -b foobar --quiet
+  touch foobarfile
+  git add foobarfile
+  git commit -m "added foobar" --quiet
+  git push --quiet -u origin foobar >/dev/null
+
+  git checkout -b foo --quiet
+
+  assertEquals "0" "$(remote_ahead_of_master)"
+  assertEquals "0" "$(remote_behind_of_master)"
+  assertEquals "0" "$(commits_behind_of_remote)"
+  assertEquals "0" "$(commits_ahead_of_remote)"
+
+  rm_tmp
+}
+
+test_remote_branch_ends_with_local_branch_name() {
+  cd_to_tmp "remote"
+  git init --bare --quiet
+  remoteLocation="$(pwd)"
+
+  cd_to_tmp "local"
+  git init --quiet
+  git remote add origin $remoteLocation
+  git fetch origin --quiet
+
+  git checkout -b master --quiet
+  touch README
+  git add README
+  git commit -m "initial commit" --quiet
+
+  git push --quiet -u origin master >/dev/null
+  git reset --quiet --hard HEAD
+
+  git checkout -b foobar --quiet
+  touch foobarfile
+  git add foobarfile
+  git commit -m "added foobar" --quiet
+  git push --quiet -u origin foobar >/dev/null
+
+  git checkout -b bar --quiet
+
+  assertEquals "0" "$(remote_ahead_of_master)"
+  assertEquals "0" "$(remote_behind_of_master)"
+  assertEquals "0" "$(commits_behind_of_remote)"
+  assertEquals "0" "$(commits_ahead_of_remote)"
+
+  rm_tmp
+}
+
 test_dont_call_remote_branch_name() {
   cd_to_tmp "remote"
   git init --bare --quiet