Logic adjustment

Author: ganziqim

hooks/commit-msg

@@ -1,26 +1,27 @@
 #!/bin/sh
 
 num=$(git diff-index --name-only --diff-filter=ACMR HEAD -- | grep '.md$' | wc -l)
-if [ $num -gt 1 ]
+if [ $num -eq 0 ]
+then
+  exit 0
+
+elif [ $num -gt 1 ]
 then
   echo >&2 Too many Markdown files.
   exit 1
-fi
 
-fs=$(git diff-index --name-only --diff-filter=ACMR HEAD -- | grep '.md$')
+else
+  fs=$(git diff-index --name-only --diff-filter=ACMR HEAD -- | grep '.md$')
 
-if [ $fs == "README.md" ]
-then
-  exit 0
-fi
+  if [ "$fs" == "README.md" ]
+  then
+    exit 0
+  fi
 
-if [ -n $fs ]
-then
-    til=$(cat ${fs} | head -1 | awk '{split($0,a," ");print a[2]}')
-    msg=$(egrep "^$til v[0-9]+(\.[0-9]+)*" "$1")
-    test -n "$msg" || {
-      echo >&2 Invalid commit message.
-      exit 1
-    }
+  til=$(cat ${fs} | head -1 | awk '{split($0,a," ");print a[2]}')
+  msg=$(egrep "^$til v[0-9]+(\.[0-9]+)*" "$1")
+  test -n "$msg" || {
+    echo >&2 Invalid commit message.
+    exit 1
+  }
 fi
-