4 files changed, 21 insertions, 19 deletions
diff --git a/%HOME%/.bash_profile b/%HOME%/.bash_profile
index b545321..bb4d98e 100644
--- a/%HOME%/.bash_profile
+++ b/%HOME%/.bash_profile
@@ -1,13 +1,14 @@
-[ -f "$HOME/.bashrc" ] && source "$HOME/.bashrc"
+[ -r "$HOME/.bashrc" ] && source "$HOME/.bashrc"
 
 echo "Welcome to $( hostname )"
 
 spawn_ssh_agent() {
     [ -n "${SSH_AGENT_PID:+x}" ] && return 0
 
-    eval "$( ssh-agent -s )" > /dev/null \
-        && trap "$( printf 'kill %q' "$SSH_AGENT_PID" )" 0 \
-        && ssh-add &> /dev/null
+    command -v ssh-agent &> /dev/null \
+        && eval "$( ssh-agent -s )" > /dev/null \
+        && [ -n "${SSH_AGENT_PID:+x}" ] \
+        && trap "$( printf 'kill %q' "$SSH_AGENT_PID" )" 0
 }
 
 [ "$( uname -o )" == 'Cygwin' ] && spawn_ssh_agent
diff --git a/%HOME%/.bash_utils/path.sh b/%HOME%/.bash_utils/path.sh
index 644ed00..b9e78b6 100644
--- a/%HOME%/.bash_utils/path.sh
+++ b/%HOME%/.bash_utils/path.sh
@@ -17,7 +17,7 @@ add_missing_path() (
 
     while IFS= read -d '' -r path; do
         new_paths+=("$path")
-    done < <( readlink --zero --canonicalize-missing "$@" )
+    done < <( readlink --zero --canonicalize-missing -- "$@" )
 
     for path; do
         if str_contains "$path" ':'; then
@@ -30,7 +30,7 @@ add_missing_path() (
 
     while IFS= read -d '' -r path; do
         old_paths[$path]=1
-    done < <( str_split -z -- "${PATH-}" ':' | xargs --null readlink --zero --canonicalize-missing )
+    done < <( str_split -z -- "${PATH-}" ':' | xargs --null readlink --zero --canonicalize-missing -- )
 
     for path in ${new_paths[@]+"${new_paths[@]}"}; do
         old_paths[$path]=1
@@ -40,6 +40,8 @@ add_missing_path() (
 )
 
 add_path() {
-    PATH="$( add_missing_path "$@" )" || return $?
-    export PATH
+    local new_path
+
+    new_path="$( add_missing_path "$@" )" \
+        && export PATH="$new_path"
 }
diff --git a/%HOME%/.bashrc b/%HOME%/.bashrc
index 7ef4910..5efe8d9 100644
--- a/%HOME%/.bashrc
+++ b/%HOME%/.bashrc
@@ -1,6 +1,6 @@
 case "$-" in
     *i*) ;;
-    *) return ;;
+      *) return ;;
 esac
 
 PS1='\[\e[33m\]\W\[\e[0m\]: '
@@ -29,12 +29,12 @@ alias tree='tree -a'
 
 [ "$( uname -o )" == 'Cygwin' ] && alias list_packages='cygcheck -cd'
 
-[ -f "$HOME/.bash_utils/cxx.sh"   ] && source "$HOME/.bash_utils/cxx.sh"
-[ -f "$HOME/.bash_utils/distr.sh" ] && source "$HOME/.bash_utils/distr.sh"
-[ -f "$HOME/.bash_utils/file.sh"  ] && source "$HOME/.bash_utils/file.sh"
-[ -f "$HOME/.bash_utils/git.sh"   ] && source "$HOME/.bash_utils/git.sh"
-[ -f "$HOME/.bash_utils/path.sh"  ] && source "$HOME/.bash_utils/path.sh"
-[ -f "$HOME/.bash_utils/text.sh"  ] && source "$HOME/.bash_utils/text.sh"
+[ -r "$HOME/.bash_utils/cxx.sh"   ] && source "$HOME/.bash_utils/cxx.sh"
+[ -r "$HOME/.bash_utils/distr.sh" ] && source "$HOME/.bash_utils/distr.sh"
+[ -r "$HOME/.bash_utils/file.sh"  ] && source "$HOME/.bash_utils/file.sh"
+[ -r "$HOME/.bash_utils/git.sh"   ] && source "$HOME/.bash_utils/git.sh"
+[ -r "$HOME/.bash_utils/path.sh"  ] && source "$HOME/.bash_utils/path.sh"
+[ -r "$HOME/.bash_utils/text.sh"  ] && source "$HOME/.bash_utils/text.sh"
 
 export PYTHONSTARTUP="$HOME/.pythonrc"
 
@@ -44,7 +44,7 @@ update_ruby_settings() {
     command -v ruby &> /dev/null \
         && command -v gem &> /dev/null \
         && user_dir="$( ruby -e 'print Gem.user_dir' )"  \
-        && add_path "$user_dir" \
+        && add_path -- "$user_dir" \
         && export GEM_HOME="$user_dir"
 }
 
diff --git a/%HOME%/.profile b/%HOME%/.profile
index 056d9db..43c0e81 100644
--- a/%HOME%/.profile
+++ b/%HOME%/.profile
@@ -1,6 +1,5 @@
-LANG="$( locale --no-unicode --utf )"
-export LANG
+LANG="$( locale --no-unicode --utf )" && export LANG
 
 [ -n "${BASH_VERSION+x}" ] \
-    && [ -f "$HOME/.bashrc" ] \
+    && [ -r "$HOME/.bashrc" ] \
     && source "$HOME/.bashrc"