diff --git a/src/util_env.rs b/src/util_env.rs
index d81dd5c..83056a5 100644
--- a/src/util_env.rs
+++ b/src/util_env.rs
@@ -2,8 +2,5 @@
 use std::env;
 
 pub fn is_env_on(var: &str) -> bool {
-    match env::var(var) {
-        Err(_) => false,
-        Ok(v) => (v == "TRUE" || v == "true" || v =="YES" || v == "yes" || v == "1"),
-    }
+    env::var(var).map(|v| v.to_lowercase()).map(|v| (v == "true" || v == "yes" || v == "1")).unwrap_or(false)
 }
diff --git a/src/util_file.rs b/src/util_file.rs
index f0199cc..5fc8223 100644
--- a/src/util_file.rs
+++ b/src/util_file.rs
@@ -6,6 +6,7 @@ use std::{
 };
 
 use super::{
+    iff,
     util_os,
     util_io,
     new_box_ioerror,
@@ -13,11 +14,7 @@ use super::{
 };
 
 pub fn get_home_str() -> Option<String> {
-    if util_os::is_macos_or_linux() {
-        env::var("HOME").ok()
-    } else {
-        None
-    }
+    iff!(util_os::is_macos_or_linux(), env::var("HOME").ok(), None)
 }
 
 pub fn get_home_path() -> Option<PathBuf> {
@@ -25,12 +22,11 @@ pub fn get_home_path() -> Option<PathBuf> {
 }
 
 pub fn get_absolute_path(path: &str) -> Option<PathBuf> {
-    if path == "~" {
-        return Some(PathBuf::from(get_home_str()?));
-    } else if path.starts_with("~/") {
-        return Some(PathBuf::from(&format!("{}/{}", get_home_str()?, &path[2..])));
+    match path {
+        "~" => Some(PathBuf::from(get_home_str()?)),
+        path if path.starts_with("~/")  => Some(PathBuf::from(&format!("{}/{}", get_home_str()?, &path[2..]))),
+        path => fs::canonicalize(path).ok(),
     }
-    fs::canonicalize(path).ok()
 }
 
 pub fn read_file_content(file: &str) -> XResult<String> {
@@ -41,10 +37,7 @@ pub fn read_file_content(file: &str) -> XResult<String> {
 }
 
 pub fn is_symlink(path: &Path) -> bool {
-    match path.symlink_metadata() {
-        Err(_) => false,
-        Ok(meta) => meta.file_type().is_symlink(),
-    }
+    path.symlink_metadata().map(|meta| meta.file_type().is_symlink()).unwrap_or(false)
 }
 
 pub fn walk_dir<FError, FProcess, FFilter>(dir: &Path,
diff --git a/src/util_msg.rs b/src/util_msg.rs
index 0bb5951..3a15006 100644
--- a/src/util_msg.rs
+++ b/src/util_msg.rs
@@ -8,7 +8,7 @@ lazy_static! {
 
 pub enum MessageType { INFO, OK, WARN, ERROR, DEBUG, }
 
-pub fn is_atty() -> bool{
+pub fn is_atty() -> bool {
     let stdout_fileno = unsafe { libc::isatty(libc::STDOUT_FILENO as i32) };
     stdout_fileno != 0
 }
@@ -83,9 +83,9 @@ pub fn get_term_width_message(message: &str, left: usize) -> String {
                return message.to_string();
             }
             let mut s = String::new();
-            s.push_str(&message[0..find_char_boundary(&message, w-10-5-left)]);
+            s.push_str(&message[0..find_char_boundary(&message, w - 10 - 5 - left)]);
             s.push_str("[...]");
-            s.push_str(&message[find_char_boundary(&message, len-10)..]);
+            s.push_str(&message[find_char_boundary(&message, len - 10)..]);
             s
         },
     }