Use `grep -q` for silent behavior

themes/bureau.zsh-theme

@@ -28,16 +28,16 @@ bureau_git_status() {
   # check status of files
   _INDEX=$(command git status --porcelain 2> /dev/null)
   if [[ -n "$_INDEX" ]]; then
-    if $(echo "$_INDEX" | command grep '^[AMRD]. ' &> /dev/null); then
+    if $(echo "$_INDEX" | command grep -q '^[AMRD]. '); then
       _STATUS="$_STATUS$ZSH_THEME_GIT_PROMPT_STAGED"
     fi
-    if $(echo "$_INDEX" | command grep '^.[MTD] ' &> /dev/null); then
+    if $(echo "$_INDEX" | command grep -q '^.[MTD] '); then
       _STATUS="$_STATUS$ZSH_THEME_GIT_PROMPT_UNSTAGED"
     fi
-    if $(echo "$_INDEX" | command grep -E '^\?\? ' &> /dev/null); then
+    if $(echo "$_INDEX" | command grep -q -E '^\?\? '); then
       _STATUS="$_STATUS$ZSH_THEME_GIT_PROMPT_UNTRACKED"
     fi
-    if $(echo "$_INDEX" | command grep '^UU ' &> /dev/null); then
+    if $(echo "$_INDEX" | command grep -q '^UU '); then
       _STATUS="$_STATUS$ZSH_THEME_GIT_PROMPT_UNMERGED"
     fi
   else
@@ -46,13 +46,13 @@ bureau_git_status() {
 
   # check status of local repository
   _INDEX=$(command git status --porcelain -b 2> /dev/null)
-  if $(echo "$_INDEX" | command grep '^## .*ahead' &> /dev/null); then
+  if $(echo "$_INDEX" | command grep -q '^## .*ahead'); then
     _STATUS="$_STATUS$ZSH_THEME_GIT_PROMPT_AHEAD"
   fi
-  if $(echo "$_INDEX" | command grep '^## .*behind' &> /dev/null); then
+  if $(echo "$_INDEX" | command grep -q '^## .*behind'); then
     _STATUS="$_STATUS$ZSH_THEME_GIT_PROMPT_BEHIND"
   fi
-  if $(echo "$_INDEX" | command grep '^## .*diverged' &> /dev/null); then
+  if $(echo "$_INDEX" | command grep -q '^## .*diverged'); then
     _STATUS="$_STATUS$ZSH_THEME_GIT_PROMPT_DIVERGED"
   fi