Define git functions with parentheses instead of curly braces, so tha…

…t we can press Ctrl+C to quit the commit prompt without terminating the shell session. (Parentheses run the function in a subshell.)

lib/git/status_shortcuts.sh

@@ -209,7 +209,7 @@ theirs(){ _git_resolve_merge_conflict "their" "$@"; }
 # * Execute prerequisite commands if message given, abort if not
 # * Pipe commit message to 'git commit'
 # * Add escaped commit command and unescaped message to bash history.
-git_commit_prompt() {
+git_commit_prompt() (
   local commit_msg
   local saved_commit_msg
   if [ -f "/tmp/.git_commit_message~" ]; then
@@ -268,10 +268,10 @@ git_commit_prompt() {
     # Delete saved commit message if commit was successful
     rm -f "/tmp/.git_commit_message~"
   fi
-}
+)
 
 # Prompt for commit message, then commit all modified and untracked files.
-git_commit_all() {
+git_commit_all() (
   fail_if_not_git_repo || return 1
   changes=$(git status --porcelain | wc -l | tr -d ' ')
   if [ "$changes" -gt 0 ]; then
@@ -283,10 +283,10 @@ git_commit_all() {
   else
     echo "# No changed files to commit."
   fi
-}
+)
 
 # Add paths or expanded args if any given, then commit all staged changes.
-git_add_and_commit() {
+git_add_and_commit() (
   fail_if_not_git_repo || return 1
   git_silent_add_shortcuts "$@"
   changes=$(git diff --cached --numstat | wc -l)
@@ -296,4 +296,4 @@ git_add_and_commit() {
   else
     echo "# No staged changes to commit."
   fi
-}
+)