diff --git a/git-quick-stats b/git-quick-stats
index 580b516..2005d7b 100755
--- a/git-quick-stats
+++ b/git-quick-stats
@@ -721,33 +721,20 @@ function changelogs() {
 function myDailyStats() {
     optionPicked "My daily status:"
 
-    local my_name="$(git config user.name)"
-    local my_email="$(git config user.email)"
-    local today_start
-    local today_end
-    local yesterday_start
-    local yesterday_end
-    local today_date
-    local yesterday_date
-
-    today_start="$(date "+%Y-%m-%dT00:00:00")"
-    today_end="$(date "+%Y-%m-%dT23:59:59")"
-    yesterday_start="$(date -d "yesterday 00:00:00" "+%Y-%m-%dT%H:%M:%S")"
-    yesterday_end="$(date -d "yesterday 23:59:59" "+%Y-%m-%dT%H:%M:%S")"
-    today_date="$(date "+%Y-%m-%d")"
-    yesterday_date="$(date -d "yesterday" "+%Y-%m-%d")"
+    local -r my_name="$(git config user.name)"
+    local -r my_email="$(git config user.email)"
+    local -r today_start="$(date "+%Y-%m-%dT00:00:00")"
+    local -r today_end="$(date "+%Y-%m-%dT23:59:59")"
+    local -r yesterday_start="$(date -d "yesterday 00:00:00" "+%Y-%m-%dT%H:%M:%S")"
+    local -r yesterday_end="$(date -d "yesterday 23:59:59" "+%Y-%m-%dT%H:%M:%S")"
+    local -r today_date="$(date "+%Y-%m-%d")"
+    local -r yesterday_date="$(date -d "yesterday" "+%Y-%m-%d")"
 
     # Current user's totals for today
-    local my_commits_today
-    local my_today_stats
-    local my_files_today
-    local my_insertions_today
-    local my_deletions_today
+    local -r my_commits_today="$(git rev-list --count --author="$my_name" $_merges \
+        --since="$today_start" --until="$today_end" HEAD)"
 
-    my_commits_today=$(git rev-list --count --author="$my_name" $_merges \
-        --since="$today_start" --until="$today_end" HEAD)
-
-    my_today_stats=$(git -c log.showSignature=false log --use-mailmap $_merges \
+    local -r my_today_stats="$(git -c log.showSignature=false log --use-mailmap $_merges \
         --author="$my_name" --numstat --format='' \
         --since="$today_start" --until="$today_end" $_log_options $_pathspec \
         | LC_ALL=C awk -F'\t' '
@@ -762,11 +749,11 @@ function myDailyStats() {
                 }
                 printf "%d|%d|%d", file_count + 0, ins + 0, del + 0;
             }
-        ')
+        ')"
 
-    my_files_today=$(echo "$my_today_stats" | awk -F'|' '{print $1}')
-    my_insertions_today=$(echo "$my_today_stats" | awk -F'|' '{print $2}')
-    my_deletions_today=$(echo "$my_today_stats" | awk -F'|' '{print $3}')
+    local -r my_files_today="$(echo "$my_today_stats" | awk -F'|' '{print $1}')"
+    local -r my_insertions_today="$(echo "$my_today_stats" | awk -F'|' '{print $2}')"
+    local -r my_deletions_today="$(echo "$my_today_stats" | awk -F'|' '{print $3}')"
 
     echo -e "\tfor ${my_name} (${today_date}):"
     echo -e "\t  commits:        ${my_commits_today}"
@@ -775,18 +762,7 @@ function myDailyStats() {
     echo -e "\t  deletions:      ${my_deletions_today}"
 
     # Compare repository totals between yesterday and today
-    local today_stats
-    local yday_stats
-    local today_commits
-    local today_files
-    local today_insertions
-    local today_deletions
-    local yday_commits
-    local yday_files
-    local yday_insertions
-    local yday_deletions
-
-    today_stats=$(git -c log.showSignature=false log --use-mailmap $_merges \
+    local -r today_stats="$(git -c log.showSignature=false log --use-mailmap $_merges \
         --numstat --format='%H' --since="$today_start" --until="$today_end" \
         $_log_options $_pathspec | LC_ALL=C awk -F'\t' '
             /^[0-9a-f]{40}$/ { commits++; next }
@@ -801,9 +777,9 @@ function myDailyStats() {
                 }
                 printf "%d|%d|%d|%d", commits + 0, file_count + 0, ins + 0, del + 0;
             }
-        ')
+        ')"
 
-    yday_stats=$(git -c log.showSignature=false log --use-mailmap $_merges \
+    local -r yday_stats="$(git -c log.showSignature=false log --use-mailmap $_merges \
         --numstat --format='%H' --since="$yesterday_start" --until="$yesterday_end" \
         $_log_options $_pathspec | LC_ALL=C awk -F'\t' '
             /^[0-9a-f]{40}$/ { commits++; next }
@@ -818,17 +794,17 @@ function myDailyStats() {
                 }
                 printf "%d|%d|%d|%d", commits + 0, file_count + 0, ins + 0, del + 0;
             }
-        ')
+        ')"
 
-    today_commits=$(echo "$today_stats" | awk -F'|' '{print $1}')
-    today_files=$(echo "$today_stats" | awk -F'|' '{print $2}')
-    today_insertions=$(echo "$today_stats" | awk -F'|' '{print $3}')
-    today_deletions=$(echo "$today_stats" | awk -F'|' '{print $4}')
+    local -r today_commits="$(echo "$today_stats" | awk -F'|' '{print $1}')"
+    local -r today_files="$(echo "$today_stats" | awk -F'|' '{print $2}')"
+    local -r today_insertions="$(echo "$today_stats" | awk -F'|' '{print $3}')"
+    local -r today_deletions="$(echo "$today_stats" | awk -F'|' '{print $4}')"
 
-    yday_commits=$(echo "$yday_stats" | awk -F'|' '{print $1}')
-    yday_files=$(echo "$yday_stats" | awk -F'|' '{print $2}')
-    yday_insertions=$(echo "$yday_stats" | awk -F'|' '{print $3}')
-    yday_deletions=$(echo "$yday_stats" | awk -F'|' '{print $4}')
+    local -r yday_commits="$(echo "$yday_stats" | awk -F'|' '{print $1}')"
+    local -r yday_files="$(echo "$yday_stats" | awk -F'|' '{print $2}')"
+    local -r yday_insertions="$(echo "$yday_stats" | awk -F'|' '{print $3}')"
+    local -r yday_deletions="$(echo "$yday_stats" | awk -F'|' '{print $4}')"
 
     echo -e "\n\trepo comparison (${yesterday_date} -> ${today_date}):"
     echo -e "\t  commits:        ${yday_commits} -> ${today_commits} (delta: $((today_commits - yday_commits)))"
@@ -838,8 +814,7 @@ function myDailyStats() {
 
     # Most changed files today (all authors)
     echo -e "\n\tmost changed files today:"
-    local top_changed_files
-    top_changed_files=$(git -c log.showSignature=false log --use-mailmap $_merges \
+    local -r top_changed_files="$(git -c log.showSignature=false log --use-mailmap $_merges \
         --numstat --format='' --since="$today_start" --until="$today_end" \
         $_log_options $_pathspec | LC_ALL=C awk -F'\t' '
             $1 ~ /^[0-9]+$/ && $2 ~ /^[0-9]+$/ {
@@ -852,7 +827,7 @@ function myDailyStats() {
                     printf "%d\t%d\t%d\t%s\n", files[f], ins[f], del[f], f;
                 }
             }
-        ' | sort -nr | head -n 5)
+        ' | sort -nr | head -n 5)"
 
     if [[ -n "$top_changed_files" ]]; then
         echo "$top_changed_files" | LC_ALL=C awk -F'\t' '{
@@ -863,14 +838,12 @@ function myDailyStats() {
     fi
 
     # First and last commit of today
-    local first_today_commit
-    local last_today_commit
-    first_today_commit=$(git -c log.showSignature=false log --use-mailmap $_merges \
+    local -r first_today_commit="$(git -c log.showSignature=false log --use-mailmap $_merges \
         --reverse --since="$today_start" --until="$today_end" \
-        --date=iso --format='%ad | %aN | %s' $_log_options $_pathspec | head -n 1)
-    last_today_commit=$(git -c log.showSignature=false log --use-mailmap $_merges \
+        --date=iso --format='%ad | %aN | %s' $_log_options $_pathspec | head -n 1)"
+    local -r last_today_commit="$(git -c log.showSignature=false log --use-mailmap $_merges \
         --since="$today_start" --until="$today_end" \
-        --date=iso --format='%ad | %aN | %s' $_log_options $_pathspec | head -n 1)
+        --date=iso --format='%ad | %aN | %s' $_log_options $_pathspec | head -n 1)"
 
     echo -e "\n\ttoday commit window:"
     if [[ -n "$first_today_commit" ]]; then
@@ -882,11 +855,10 @@ function myDailyStats() {
 
     # Most active users today (excluding current user)
     echo -e "\n\tmost active users today (excluding you):"
-    local active_users
-    active_users=$(git -c log.showSignature=false log --use-mailmap $_merges \
+    local -r active_users="$(git -c log.showSignature=false log --use-mailmap $_merges \
         --since="$today_start" --until="$today_end" --format='%aN|%aE' \
-        $_log_options $_pathspec | LC_ALL=C awk -F'|' -v me_name="$my_name" -v me_email="$my_email" '
-            $1 != me_name && $2 != me_email {
+        $_log_options $_pathspec | LC_ALL=C awk -F'|' -v git_name="$my_name" -v git_email="$my_email" '
+            $1 != git_name && $2 != git_email {
                 key = $1 " <" $2 ">";
                 count[key]++;
             }
@@ -895,7 +867,7 @@ function myDailyStats() {
                     printf "%d\t%s\n", count[k], k;
                 }
             }
-        ' | sort -nr | head -n 5)
+        ' | sort -nr | head -n 5)"
 
     if [[ -n "$active_users" ]]; then
         echo "$active_users" | LC_ALL=C awk -F'\t' '{