bash: add ghist

.bash_extra

@@ -174,6 +174,49 @@ function gp {
 function mdtoc {
   grep --recursive --include="*.md" ^# | sort --version-sort --field-separator=":" | awk 'BEGIN {FS=":"}{print $2 "&&" $1}' | column --table --separator "&&" --table-truncate 1,2
 }
+# "scrolle" durch die commit-history
+ghist() {
+    local total_commits=$(git rev-list HEAD --count)
+    local current_commit=$total_commits
+
+    show_commit_diff() {
+        if [ $current_commit -le $total_commits ] && [ $current_commit -ge 1 ]; then
+            local commit_hash=$(git rev-list --reverse HEAD | sed -n "${current_commit}p")
+            git --no-pager show $commit_hash
+        fi
+    }
+
+    while true; do
+        clear  # Clear the terminal
+        show_commit_diff
+
+        # Display navigation options
+        echo "-----------------------------------------------------------"
+        echo "Navigation: N - Next Commit, P - Previous Commit, Q - Quit"
+        echo "-----------------------------------------------------------"
+        read -n1 -s option
+
+        case $option in
+            p|P)
+                if [ $current_commit -gt 1 ]; then
+                    ((current_commit--))
+                fi
+                ;;
+            n|N)
+                if [ $current_commit -lt $total_commits ]; then
+                    ((current_commit++))
+                fi
+                ;;
+            q|Q)
+                break
+                ;;
+            *)
+                echo "Invalid option"
+                ;;
+        esac
+    done
+}
+
 ### Aliase
 # tmux
 alias tmuxa="tmux a -t "