Use [ -nt ] instead of stat -f%m to check cache files.

plugins/ant/ant.plugin.zsh

-stat -f%m . > /dev/null 2>&1
-if [ "$?" = 0 ]; then
-	stat_cmd=(stat -f%m)
-else
-	stat_cmd=(stat -L --format=%Y)
-fi
-
 _ant_does_target_list_need_generating () {
-  if [ ! -f .ant_targets ]; then return 0;
-  else
-    accurate=$($stat_cmd .ant_targets)
-    changed=$($stat_cmd build.xml)
-    return $(expr $accurate '>=' $changed)
-  fi
+  [ ! -f .ant_targets ] && return 0;
+  [ .ant_targets -nt build.xml ] && return 0;
+  return 1;
 }
 
 _ant () {

plugins/cake/cake.plugin.zsh

@@ -14,12 +14,9 @@ _cake_does_target_list_need_generating () {
 		return 1;
 	fi
 
-	if [ ! -f ${_cake_task_cache_file} ]; then return 0;
-	else
-		accurate=$(stat -f%m $_cake_task_cache_file)
-		changed=$(stat -f%m Cakefile)
-		return $(expr $accurate '>=' $changed)
-	fi
+	[ ! -f ${_cake_task_cache_file} ] && return 0;
+	[ ${_cake_task_cache_file} -nt Cakefile ] && return 0;
+	return 1;
 }
 
 _cake () {

plugins/gradle/gradle.plugin.zsh

@@ -54,27 +54,14 @@ function in_gradle() {
     fi
 }
 
-############################################################################
-# Define the stat_cmd command based on platform behavior
-##########################################################################
-stat -f%m . > /dev/null 2>&1
-if [ "$?" = 0 ]; then
-	stat_cmd=(stat -f%m)
-else
-	stat_cmd=(stat -L --format=%Y)
-fi
-
 ############################################################################## Examine the build.gradle file to see if its
 # timestamp has changed, and if so, regen
 # the .gradle_tasks cache file
 ############################################################################
 _gradle_does_task_list_need_generating () {
-  if [ ! -f .gradletasknamecache ]; then return 0;
-  else
-    accurate=$($stat_cmd .gradletasknamecache)
-    changed=$($stat_cmd build.gradle)
-    return $(expr $accurate '>=' $changed)
-  fi
+  [ ! -f .gradletasknamecache ] && return 0;
+  [ .gradletasknamecache -nt build.gradle ] && return 0;
+  return 1;
 }
 
 

plugins/phing/phing.plugin.zsh

 _phing_does_target_list_need_generating () {
-  if [ ! -f .phing_targets ]; then return 0;
-  else
-    accurate=$(stat -f%m .phing_targets)
-    changed=$(stat -f%m build.xml)
-    return $(expr $accurate '>=' $changed)
-  fi
+  [ ! -f .phing_targets ] && return 0;
+  [ .phing_targets -nt build.xml ] && return 0;
+  return 1;
 }
 
 _phing () {