#!/usr/bin/env bash set -euo pipefail # # 16-diff-mastery.sh — Diff & Review Tools # # Description: # Advanced diff visualization, patch management, and change analysis tools. # Supports compact diffs, patch creation/application, complexity analysis, # side-by-side display, HTML export, word-level diffs, and interactive # branch/tag/commit comparison. # # Usage: # ./16-diff-mastery.sh # Interactive menu # ./16-diff-mastery.sh staged # Show staged diff # ./16-diff-mastery.sh unstaged # Show unstaged diff # ./16-diff-mastery.sh compare REF1 REF2 # Compare two refs # ./16-diff-mastery.sh complexity # Change complexity analysis # ./16-diff-mastery.sh patch create # Create a patch # ./16-diff-mastery.sh patch apply FILE # Apply a patch # # Dependencies: # securegit (optional), delta (optional), diff (system) # SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)" source "$SCRIPT_DIR/lib/securegit-common.sh" # ─── Constants ─────────────────────────────────────────────────────────────── readonly PROG_NAME="diff-mastery" readonly VERSION="1.0.0" # ─── Tool detection ───────────────────────────────────────────────────────── _has_delta() { command -v delta &>/dev/null } _has_colordiff() { command -v colordiff &>/dev/null } _diff_tool_name() { if _has_delta; then echo "delta" elif _has_colordiff; then echo "colordiff" else echo "diff" fi } # ─── Diff display helpers ─────────────────────────────────────────────────── _show_diff_staged() { sg_header "Staged Changes" local file_count file_count=$(git diff --cached --name-only 2>/dev/null | wc -l) if [[ "$file_count" -eq 0 ]]; then sg_info "No staged changes." return fi printf "${_C_BOLD}Files staged:${_C_RESET} %d\n\n" "$file_count" if _has_delta; then git diff --cached | delta else _sg_cmd diff --cached 2>/dev/null || git diff --cached fi } _show_diff_unstaged() { sg_header "Unstaged Changes" local file_count file_count=$(git diff --name-only 2>/dev/null | wc -l) if [[ "$file_count" -eq 0 ]]; then sg_info "No unstaged changes." return fi printf "${_C_BOLD}Files modified:${_C_RESET} %d\n\n" "$file_count" if _has_delta; then git diff | delta else _sg_cmd diff 2>/dev/null || git diff fi } _show_diff_compact() { local ref1="${1:-}" ref2="${2:-}" if [[ -z "$ref1" ]]; then # Default: staged changes sg_header "Compact Diff (Staged)" git diff --cached --stat echo git diff --cached --shortstat elif [[ -z "$ref2" ]]; then sg_header "Compact Diff (vs $ref1)" git diff --stat "$ref1" echo git diff --shortstat "$ref1" else sg_header "Compact Diff ($ref1 vs $ref2)" git diff --stat "$ref1..$ref2" echo git diff --shortstat "$ref1..$ref2" fi } # ─── Branch comparison ────────────────────────────────────────────────────── _compare_refs() { local ref1="${1:-}" ref2="${2:-}" if [[ -z "$ref1" ]]; then ref1=$(sg_prompt "First ref (branch, tag, or commit)") fi if [[ -z "$ref2" ]]; then ref2=$(sg_prompt "Second ref (branch, tag, or commit)" "$(sg_current_branch)") fi # Validate refs if ! git rev-parse --verify "$ref1" &>/dev/null; then sg_die "Invalid ref: $ref1" fi if ! git rev-parse --verify "$ref2" &>/dev/null; then sg_die "Invalid ref: $ref2" fi sg_header "Comparing $ref1 .. $ref2" # Summary stats local stats stats="$(git diff --shortstat "$ref1..$ref2" 2>/dev/null || echo "No differences")" printf "${_C_BOLD}Summary:${_C_RESET} %s\n\n" "$stats" # Commit count local commit_count commit_count=$(git rev-list --count "$ref1..$ref2" 2>/dev/null || echo 0) printf "${_C_BOLD}Commits:${_C_RESET} %s\n\n" "$commit_count" # Files changed sg_info "Files changed:" git diff --name-status "$ref1..$ref2" 2>/dev/null | while IFS=$'\t' read -r status file; do local color="" case "$status" in A) color="${_C_GREEN}" ;; D) color="${_C_RED}" ;; M) color="${_C_YELLOW}" ;; R*) color="${_C_CYAN}" ;; *) color="" ;; esac printf " ${color}%-5s${_C_RESET} %s\n" "$status" "$file" done echo local view_choice view_choice=$(sg_menu "View Options" \ "Full diff" \ "Stat only (compact)" \ "File-by-file diff" \ "Word-level diff" \ "Commit log between refs" \ "Back") case "$view_choice" in 1) if _has_delta; then git diff "$ref1..$ref2" | delta else _sg_cmd diff "$ref1..$ref2" 2>/dev/null || git diff "$ref1..$ref2" fi ;; 2) git diff --stat "$ref1..$ref2" ;; 3) _file_by_file_diff "$ref1" "$ref2" ;; 4) _word_diff "$ref1" "$ref2" ;; 5) git log --oneline "$ref1..$ref2" ;; 6) return ;; esac } _file_by_file_diff() { local ref1="$1" ref2="$2" local files files="$(git diff --name-only "$ref1..$ref2" 2>/dev/null)" if [[ -z "$files" ]]; then sg_info "No differences between $ref1 and $ref2." return fi local file_arr=() while IFS= read -r f; do [[ -n "$f" ]] && file_arr+=("$f") done <<< "$files" sg_info "Select a file to view diff:" local i for i in "${!file_arr[@]}"; do printf " ${_C_BOLD}%d)${_C_RESET} %s\n" "$((i + 1))" "${file_arr[$i]}" done echo local file_choice while true; do printf "Select [1-%d, or 'q' to quit]: " "${#file_arr[@]}" read -r file_choice [[ "$file_choice" == "q" ]] && return if [[ "$file_choice" =~ ^[0-9]+$ ]] && (( file_choice >= 1 && file_choice <= ${#file_arr[@]} )); then local selected_file="${file_arr[$((file_choice - 1))]}" sg_header "Diff: $selected_file" if _has_delta; then git diff "$ref1..$ref2" -- "$selected_file" | delta else git diff "$ref1..$ref2" -- "$selected_file" fi else sg_warn "Invalid selection." fi done } # ─── Word-level diff ──────────────────────────────────────────────────────── _word_diff() { local ref1="${1:-}" ref2="${2:-}" sg_header "Word-Level Diff" sg_info "Showing inline word changes (useful for documentation)." echo if [[ -z "$ref1" && -z "$ref2" ]]; then # Working tree vs index git diff --word-diff=color --word-diff-regex='[^[:space:]]+' 2>/dev/null \ || git diff --word-diff elif [[ -z "$ref2" ]]; then git diff --word-diff=color --word-diff-regex='[^[:space:]]+' "$ref1" 2>/dev/null \ || git diff --word-diff "$ref1" else git diff --word-diff=color --word-diff-regex='[^[:space:]]+' "$ref1..$ref2" 2>/dev/null \ || git diff --word-diff "$ref1..$ref2" fi } # ─── Patch management ─────────────────────────────────────────────────────── _create_patch() { sg_header "Create Patch" local patch_choice patch_choice=$(sg_menu "Patch Source" \ "From staged changes" \ "From unstaged changes" \ "From commit range" \ "From branch comparison" \ "From specific commits (format-patch)") local root root="$(git rev-parse --show-toplevel)" local patch_dir="$root" local timestamp timestamp="$(date +%Y%m%d-%H%M%S)" case "$patch_choice" in 1) # Staged local patch_file="$patch_dir/staged-$timestamp.patch" git diff --cached > "$patch_file" if [[ -s "$patch_file" ]]; then sg_success "Patch created: $patch_file" printf " ${_C_DIM}Size: %s${_C_RESET}\n" "$(du -h "$patch_file" | cut -f1)" else rm -f "$patch_file" sg_info "No staged changes to create patch from." fi ;; 2) # Unstaged local patch_file="$patch_dir/unstaged-$timestamp.patch" git diff > "$patch_file" if [[ -s "$patch_file" ]]; then sg_success "Patch created: $patch_file" printf " ${_C_DIM}Size: %s${_C_RESET}\n" "$(du -h "$patch_file" | cut -f1)" else rm -f "$patch_file" sg_info "No unstaged changes to create patch from." fi ;; 3) # Commit range local range_start range_end range_start=$(sg_prompt "Start ref (e.g., HEAD~5, v1.0.0)") range_end=$(sg_prompt "End ref" "HEAD") local patch_file="$patch_dir/range-${range_start//\//-}-$timestamp.patch" git diff "$range_start..$range_end" > "$patch_file" if [[ -s "$patch_file" ]]; then sg_success "Patch created: $patch_file" printf " ${_C_DIM}Size: %s${_C_RESET}\n" "$(du -h "$patch_file" | cut -f1)" else rm -f "$patch_file" sg_info "No differences in specified range." fi ;; 4) # Branch comparison local branch1 branch2 branch1=$(sg_prompt "Base branch" "$(sg_default_branch)") branch2=$(sg_prompt "Compare branch" "$(sg_current_branch)") local patch_file="$patch_dir/branch-${branch2//\//-}-$timestamp.patch" git diff "$branch1..$branch2" > "$patch_file" if [[ -s "$patch_file" ]]; then sg_success "Patch created: $patch_file" printf " ${_C_DIM}Size: %s${_C_RESET}\n" "$(du -h "$patch_file" | cut -f1)" else rm -f "$patch_file" sg_info "No differences between branches." fi ;; 5) # format-patch (individual commit patches) local ref ref=$(sg_prompt "Base ref (creates patches for commits after this)" "$(sg_default_branch)") local output_dir="$patch_dir/patches-$timestamp" mkdir -p "$output_dir" local count count=$(git format-patch -o "$output_dir" "$ref" 2>/dev/null | wc -l) if [[ "$count" -gt 0 ]]; then sg_success "Created $count patch file(s) in $output_dir/" ls -1 "$output_dir/" else rmdir "$output_dir" 2>/dev/null || true sg_info "No commits to create patches from." fi ;; esac } _apply_patch() { sg_header "Apply Patch" local patch_file patch_file=$(sg_prompt "Path to patch file") if [[ ! -f "$patch_file" ]]; then sg_die "Patch file not found: $patch_file" fi sg_info "Patch file: $patch_file" printf " ${_C_DIM}Size: %s${_C_RESET}\n" "$(du -h "$patch_file" | cut -f1)" echo # Dry run first sg_info "Checking if patch applies cleanly..." if git apply --check "$patch_file" 2>/dev/null; then sg_success "Patch applies cleanly." else sg_error "Patch has conflicts." sg_info "Attempting three-way merge check..." if git apply --check --3way "$patch_file" 2>/dev/null; then sg_warn "Patch can be applied with 3-way merge." else sg_error "Patch cannot be applied. Manual resolution required." return 1 fi fi # Show patch stats sg_info "Patch statistics:" git apply --stat "$patch_file" 2>/dev/null echo local apply_choice apply_choice=$(sg_menu "Apply Method" \ "Apply (git apply)" \ "Apply with 3-way merge (git apply --3way)" \ "Apply as commits (git am)" \ "Preview only (no changes)" \ "Cancel") case "$apply_choice" in 1) if git apply "$patch_file"; then sg_success "Patch applied successfully." sg_undo_available else sg_error "Failed to apply patch." fi ;; 2) if git apply --3way "$patch_file"; then sg_success "Patch applied with 3-way merge." sg_undo_available else sg_error "Failed to apply patch. Resolve conflicts manually." fi ;; 3) if git am "$patch_file" 2>/dev/null; then sg_success "Patch applied as commit(s)." sg_undo_available else sg_error "Failed to apply patch. Run 'git am --abort' to cancel." fi ;; 4) sg_info "Preview (no changes applied):" git apply --stat "$patch_file" ;; 5) sg_info "Cancelled." ;; esac } # ─── Complexity analysis ──────────────────────────────────────────────────── _complexity_analysis() { local ref1="${1:-}" ref2="${2:-}" sg_header "Change Complexity Analysis" # Determine what to analyze if [[ -z "$ref1" ]]; then local analysis_choice analysis_choice=$(sg_menu "Analyze Changes" \ "Staged changes" \ "Unstaged changes" \ "Current branch vs default branch" \ "Custom ref comparison") case "$analysis_choice" in 1) ref1="--cached"; ref2="" ;; 2) ref1=""; ref2="" ;; 3) ref1="${SG_PRIMARY_REMOTE:-origin}/$(sg_default_branch)"; ref2="HEAD" ;; 4) ref1=$(sg_prompt "Base ref") ref2=$(sg_prompt "Compare ref" "HEAD") ;; esac fi # Compute stats local diff_args="" if [[ "$ref1" == "--cached" ]]; then diff_args="--cached" elif [[ -n "$ref1" && -n "$ref2" ]]; then diff_args="$ref1..$ref2" elif [[ -n "$ref1" ]]; then diff_args="$ref1" fi local numstat numstat="$(git diff --numstat $diff_args 2>/dev/null || echo "")" if [[ -z "$numstat" ]]; then sg_info "No changes to analyze." return fi # Parse statistics local total_files=0 total_insertions=0 total_deletions=0 local max_file="" max_churn=0 # Track file types declare -A type_counts declare -A type_insertions declare -A type_deletions sg_info "Per-file breakdown:" sg_divider printf " ${_C_BOLD}%-50s %8s %8s %8s${_C_RESET}\n" "File" "+Lines" "-Lines" "Churn" sg_divider while IFS=$'\t' read -r ins del file; do [[ -z "$file" ]] && continue # Binary files show "-" for stats [[ "$ins" == "-" ]] && ins=0 [[ "$del" == "-" ]] && del=0 total_files=$((total_files + 1)) total_insertions=$((total_insertions + ins)) total_deletions=$((total_deletions + del)) local churn=$((ins + del)) if (( churn > max_churn )); then max_churn=$churn max_file="$file" fi # Color based on churn local color="" if (( churn > 200 )); then color="${_C_RED}" elif (( churn > 50 )); then color="${_C_YELLOW}" else color="${_C_GREEN}" fi printf " ${color}%-50s %+8d %8d %8d${_C_RESET}\n" \ "$(echo "$file" | tail -c 50)" "$ins" "-$del" "$churn" # Track by file type local ext ext="${file##*.}" [[ "$ext" == "$file" ]] && ext="(no ext)" type_counts["$ext"]=$(( ${type_counts["$ext"]:-0} + 1 )) type_insertions["$ext"]=$(( ${type_insertions["$ext"]:-0} + ins )) type_deletions["$ext"]=$(( ${type_deletions["$ext"]:-0} + del )) done <<< "$numstat" sg_divider printf " ${_C_BOLD}%-50s %+8d %8d %8d${_C_RESET}\n" \ "TOTAL" "$total_insertions" "-$total_deletions" "$((total_insertions + total_deletions))" echo # Summary metrics sg_header "Complexity Metrics" printf " ${_C_BOLD}Files changed:${_C_RESET} %d\n" "$total_files" printf " ${_C_BOLD}Insertions:${_C_RESET} %d\n" "$total_insertions" printf " ${_C_BOLD}Deletions:${_C_RESET} %d\n" "$total_deletions" printf " ${_C_BOLD}Total churn:${_C_RESET} %d\n" "$((total_insertions + total_deletions))" printf " ${_C_BOLD}Net change:${_C_RESET} %+d\n" "$((total_insertions - total_deletions))" echo if [[ -n "$max_file" ]]; then printf " ${_C_BOLD}Hotspot:${_C_RESET} %s (%d lines churned)\n" "$max_file" "$max_churn" fi # Churn risk assessment local total_churn=$((total_insertions + total_deletions)) local max_diff="${SG_MAX_DIFF_LINES:-200}" echo if (( total_churn > max_diff * 3 )); then sg_error "HIGH complexity: $total_churn lines (${max_diff}x3 threshold). Strongly consider splitting." elif (( total_churn > max_diff )); then sg_warn "MODERATE complexity: $total_churn lines (over $max_diff threshold). Consider splitting." else sg_success "LOW complexity: $total_churn lines (under $max_diff threshold). Good size." fi # File type breakdown if [[ ${#type_counts[@]} -gt 1 ]]; then echo sg_info "Changes by file type:" for ext in $(echo "${!type_counts[@]}" | tr ' ' '\n' | sort); do printf " ${_C_DIM}.%-10s${_C_RESET} %3d file(s) +%-6d -%d\n" \ "$ext" "${type_counts[$ext]}" "${type_insertions[$ext]}" "${type_deletions[$ext]}" done fi } # ─── Side-by-side diff ────────────────────────────────────────────────────── _side_by_side_diff() { local ref1="${1:-}" ref2="${2:-}" sg_header "Side-by-Side Diff" if _has_delta; then sg_info "Using delta for side-by-side view." if [[ -z "$ref1" ]]; then git diff | delta --side-by-side elif [[ -z "$ref2" ]]; then git diff "$ref1" | delta --side-by-side else git diff "$ref1..$ref2" | delta --side-by-side fi else # Fall back to system diff with --side-by-side if available, or git's own local width width=$(tput cols 2>/dev/null || echo 120) sg_info "Using git diff with diffstat. Install 'delta' for better side-by-side display." sg_info " brew install git-delta / cargo install git-delta" echo if [[ -z "$ref1" ]]; then git diff --stat --color echo git diff --color elif [[ -z "$ref2" ]]; then git diff --stat --color "$ref1" echo git diff --color "$ref1" else git diff --stat --color "$ref1..$ref2" echo git diff --color "$ref1..$ref2" fi fi } # ─── HTML diff export ─────────────────────────────────────────────────────── _export_html_diff() { sg_header "Export Diff as HTML" local ref1 ref2 ref1=$(sg_prompt "Base ref (or press Enter for working tree)" "") ref2=$(sg_prompt "Compare ref (or press Enter for HEAD)" "") local root root="$(git rev-parse --show-toplevel)" local timestamp timestamp="$(date +%Y%m%d-%H%M%S)" local output_file="$root/diff-report-$timestamp.html" # Get raw diff local diff_content if [[ -z "$ref1" && -z "$ref2" ]]; then diff_content="$(git diff --cached 2>/dev/null; git diff 2>/dev/null)" elif [[ -z "$ref2" ]]; then diff_content="$(git diff "$ref1" 2>/dev/null)" else diff_content="$(git diff "$ref1..$ref2" 2>/dev/null)" fi if [[ -z "$diff_content" ]]; then sg_info "No differences to export." return fi # Get stats local stat_content if [[ -z "$ref1" && -z "$ref2" ]]; then stat_content="$(git diff --cached --stat 2>/dev/null; git diff --stat 2>/dev/null)" elif [[ -z "$ref2" ]]; then stat_content="$(git diff --stat "$ref1" 2>/dev/null)" else stat_content="$(git diff --stat "$ref1..$ref2" 2>/dev/null)" fi local repo_name repo_name="$(basename "$root")" local ref_desc if [[ -z "$ref1" && -z "$ref2" ]]; then ref_desc="Working tree changes" elif [[ -z "$ref2" ]]; then ref_desc="$ref1 vs working tree" else ref_desc="$ref1 .. $ref2" fi # Generate HTML cat > "$output_file" < Diff Report - $repo_name

Diff Report: $repo_name

Generated: $(date -u)

Comparison: $ref_desc

Branch: $(sg_current_branch)

Statistics

$(echo "$stat_content" | sed 's/&/\&/g; s//\>/g')

Changes

$(echo "$diff_content" | sed \ -e 's/&/\&/g' \ -e 's//\>/g' \ -e 's|^+\(.*\)$|+\1|' \ -e 's|^-\(.*\)$|-\1|' \ -e 's|^@@\(.*\)@@|@@\1@@|' \ -e 's|^diff --git\(.*\)|diff --git\1|' )
HTMLEOF sg_success "HTML diff report exported: $output_file" printf " ${_C_DIM}Size: %s${_C_RESET}\n" "$(du -h "$output_file" | cut -f1)" # Try to open in browser if command -v xdg-open &>/dev/null; then if sg_confirm "Open in browser?" "y"; then xdg-open "$output_file" &>/dev/null & fi elif command -v open &>/dev/null; then if sg_confirm "Open in browser?" "y"; then open "$output_file" &>/dev/null & fi fi } # ─── Files changed between refs ───────────────────────────────────────────── _files_changed() { sg_header "Files Changed Between Refs" local ref1 ref2 ref1=$(sg_prompt "First ref" "$(sg_default_branch)") ref2=$(sg_prompt "Second ref" "$(sg_current_branch)") if ! git rev-parse --verify "$ref1" &>/dev/null; then sg_die "Invalid ref: $ref1" fi if ! git rev-parse --verify "$ref2" &>/dev/null; then sg_die "Invalid ref: $ref2" fi sg_info "Files changed between $ref1 and $ref2:" echo local added=0 modified=0 deleted=0 renamed=0 git diff --name-status "$ref1..$ref2" 2>/dev/null | while IFS=$'\t' read -r status file extra; do case "$status" in A) printf " ${_C_GREEN}[ADDED]${_C_RESET} %s\n" "$file" ;; M) printf " ${_C_YELLOW}[MODIFIED]${_C_RESET} %s\n" "$file" ;; D) printf " ${_C_RED}[DELETED]${_C_RESET} %s\n" "$file" ;; R*) printf " ${_C_CYAN}[RENAMED]${_C_RESET} %s -> %s\n" "$file" "$extra" ;; C*) printf " ${_C_BLUE}[COPIED]${_C_RESET} %s -> %s\n" "$file" "$extra" ;; *) printf " [%s] %s\n" "$status" "$file" ;; esac done echo git diff --shortstat "$ref1..$ref2" 2>/dev/null } # ─── Interactive comparison picker ────────────────────────────────────────── _interactive_compare() { sg_header "Interactive Comparison" # List available branches and recent tags sg_info "Available branches:" local branches branches="$(git branch --format='%(refname:short)' 2>/dev/null | head -20)" local branch_arr=() while IFS= read -r b; do [[ -n "$b" ]] && branch_arr+=("$b") done <<< "$branches" local i for i in "${!branch_arr[@]}"; do local marker="" [[ "${branch_arr[$i]}" == "$(sg_current_branch)" ]] && marker=" ${_C_GREEN}(current)${_C_RESET}" printf " ${_C_BOLD}%d)${_C_RESET} %s%s\n" "$((i + 1))" "${branch_arr[$i]}" "$marker" done echo sg_info "Recent tags:" local tags tags="$(git tag -l --sort=-version:refname 2>/dev/null | head -10)" if [[ -n "$tags" ]]; then local tag_arr=() while IFS= read -r t; do [[ -n "$t" ]] && tag_arr+=("$t") done <<< "$tags" local offset="${#branch_arr[@]}" for i in "${!tag_arr[@]}"; do printf " ${_C_BOLD}%d)${_C_RESET} %s\n" "$((i + offset + 1))" "${tag_arr[$i]}" done fi echo local ref1 ref2 ref1=$(sg_prompt "First ref (number or name)" "$(sg_default_branch)") # Resolve number to name if [[ "$ref1" =~ ^[0-9]+$ ]]; then local total_arr=("${branch_arr[@]}" ${tag_arr[@]+"${tag_arr[@]}"}) if (( ref1 >= 1 && ref1 <= ${#total_arr[@]} )); then ref1="${total_arr[$((ref1 - 1))]}" fi fi ref2=$(sg_prompt "Second ref (number or name)" "$(sg_current_branch)") if [[ "$ref2" =~ ^[0-9]+$ ]]; then local total_arr=("${branch_arr[@]}" ${tag_arr[@]+"${tag_arr[@]}"}) if (( ref2 >= 1 && ref2 <= ${#total_arr[@]} )); then ref2="${total_arr[$((ref2 - 1))]}" fi fi _compare_refs "$ref1" "$ref2" } # ─── Main ──────────────────────────────────────────────────────────────────── main() { sg_require_repo # Handle direct arguments case "${1:-}" in staged) _show_diff_staged exit 0 ;; unstaged) _show_diff_unstaged exit 0 ;; compare) _compare_refs "${2:-}" "${3:-}" exit 0 ;; complexity) _complexity_analysis "${2:-}" "${3:-}" exit 0 ;; patch) case "${2:-}" in create) _create_patch ;; apply) _apply_patch "${3:-}" ;; *) echo "Usage: $0 patch [create|apply FILE]" ;; esac exit 0 ;; --help|-h) echo "Usage: $0 [staged|unstaged|compare REF1 REF2|complexity|patch create|apply FILE|--help]" echo echo "Commands:" echo " staged Show staged changes" echo " unstaged Show unstaged changes" echo " compare R1 R2 Compare two refs" echo " complexity Analyze change complexity" echo " patch create Create a patch file" echo " patch apply F Apply a patch file" exit 0 ;; esac # Interactive menu sg_info "Diff tool: $(_diff_tool_name)" echo while true; do local choice choice=$(sg_menu "Diff & Review Tools" \ "Show staged diff" \ "Show unstaged diff" \ "Compact diff overview" \ "Compare branches/tags/commits" \ "Interactive comparison picker" \ "Word-level diff (documentation)" \ "Side-by-side diff" \ "Change complexity analysis" \ "Create patch file" \ "Apply patch file" \ "Export diff as HTML report" \ "Files changed between refs" \ "Exit") case "$choice" in 1) _show_diff_staged ;; 2) _show_diff_unstaged ;; 3) local compact_ref compact_ref=$(sg_prompt "Ref to compare against (or press Enter for staged)" "") _show_diff_compact "$compact_ref" ;; 4) _compare_refs ;; 5) _interactive_compare ;; 6) local wref1 wref2 wref1=$(sg_prompt "First ref (or press Enter for working tree)" "") wref2=$(sg_prompt "Second ref (or press Enter for none)" "") _word_diff "$wref1" "$wref2" ;; 7) local sref1 sref2 sref1=$(sg_prompt "First ref (or press Enter for working tree)" "") sref2=$(sg_prompt "Second ref (or press Enter for none)" "") _side_by_side_diff "$sref1" "$sref2" ;; 8) _complexity_analysis ;; 9) _create_patch ;; 10) _apply_patch ;; 11) _export_html_diff ;; 12) _files_changed ;; 13) sg_success "Done." exit 0 ;; esac echo done } main "$@"