src-tauri/src/git.rs

@@ -1338,6 +1338,10 @@ fn search_candidate_commits(
             OsString::from("--all"),
             OsString::from("--reverse"),
             OsString::from("--format=%H"),
+            // Skip textconv diff drivers so git does not extract binary files
+            // (e.g. .docx / Office temp "~$" lock files) to temp files, which can
+            // fail with "unsupported filetype" and abort the whole search.
+            OsString::from("--no-textconv"),
         ];
         if !case_sensitive {
             args.push(OsString::from("-i"));
@@ -1447,7 +1451,7 @@ fn first_added_match_line(
     check_search_cancelled(cancellation)?;
     let output = run_git_with_paths_cancellable(
         repo,
-        &["diff", "--unified=0", parent, commit],
+        &["diff", "--no-textconv", "--unified=0", parent, commit],
         &[file.to_string()],
         cancellation,
         "Git-Diff fuer Suchtreffer fehlgeschlagen",

src/App.svelte

@@ -96,8 +96,10 @@
   let comparison: GitCommitComparison | null = null;
   let compareDialogOpen = false;
   let selectedDiffPath = "";
+  let diffHighlightQuery = "";
   let pendingRestoreFile: { commit: GitCommit; file: GitCommitFile } | null = null;
   let globalSearchOpen = false;
+  let lastSearchQuery = "";
   let globalSearchResults: GitSearchHit[] = [];
   let globalSearchBusy = false;
   let globalSearchError = "";
@@ -746,6 +748,7 @@
       const result = await compareCommits(activeRepoPath, compareFrom, compareTo);
       comparison = result;
       selectedDiffPath = result.files[0]?.path ?? "";
+      diffHighlightQuery = "";
       pendingRestoreFile = null;
       compareDialogOpen = true;
     });
@@ -757,6 +760,19 @@
       const result = await diffFileAgainstWorkingTree(activeRepoPath, historyCommit.hash, selectedExplorerPath);
       comparison = result;
       selectedDiffPath = result.files[0]?.path ?? selectedExplorerPath;
+      diffHighlightQuery = "";
+      pendingRestoreFile = null;
+      compareDialogOpen = true;
+    });
+  }
+
+  async function diffSearchHit(hit: GitSearchHit) {
+    if (!activeRepoPath) return;
+    await runOperation(`Diffing ${hit.file}`, async () => {
+      const result = await diffFileAgainstWorkingTree(activeRepoPath, hit.commit_hash, hit.file);
+      comparison = result;
+      selectedDiffPath = result.files[0]?.path ?? hit.file;
+      diffHighlightQuery = lastSearchQuery;
       pendingRestoreFile = null;
       compareDialogOpen = true;
     });
@@ -785,6 +801,7 @@
     if (!activeRepoPath || globalSearchBusy) return;
     const searchId = `search-${Date.now()}-${Math.random().toString(36).slice(2)}`;
     globalSearchId = searchId;
+    lastSearchQuery = query;
     globalSearchBusy = true;
     globalSearchError = "";
     globalSearchResults = [];
@@ -1109,19 +1126,6 @@
   />
 {/if}
 
-<!-- Compare diff dialog -->
-{#if compareDialogOpen && comparison}
-  <CompareDialog
-    {comparison}
-    {selectedDiffPath}
-    {isBusy}
-    restoreLabel={pendingRestoreFile ? "Restore file" : ""}
-    onClose={closeCompareDialog}
-    onRestore={restorePreviewedCommitFile}
-    onSelectFile={selectDiffFile}
-  />
-{/if}
-
 {#if globalSearchOpen}
   <GlobalSearchDialog
     {hasRepository}
@@ -1132,6 +1136,21 @@
     onClose={closeGlobalSearchDialog}
     onSearch={runGlobalSearch}
     onCancel={cancelGlobalSearch}
+    onDiff={diffSearchHit}
+  />
+{/if}
+
+<!-- Compare diff dialog (rendered last so it overlays the search dialog when opened from a hit) -->
+{#if compareDialogOpen && comparison}
+  <CompareDialog
+    {comparison}
+    {selectedDiffPath}
+    {isBusy}
+    highlightQuery={diffHighlightQuery}
+    restoreLabel={pendingRestoreFile ? "Restore file" : ""}
+    onClose={closeCompareDialog}
+    onRestore={restorePreviewedCommitFile}
+    onSelectFile={selectDiffFile}
   />
 {/if}
 

src/app.css

@@ -1123,6 +1123,19 @@
   .split-cell.add   { background: rgba(78,202,118,0.09); color: #5dd88a; }
   .split-cell.empty { background: rgba(0,0,0,0.06); }
 
+  /* Search-hit highlight: amber, distinct from add (green) / del (red).
+     Higher specificity so it overrides the add/del backgrounds on a matched line. */
+  .split-diff .split-cell.match {
+    background: rgba(240,182,72,0.22);
+    color: #f3c969;
+    box-shadow: inset 2px 0 0 rgba(240,182,72,0.9);
+  }
+  .split-diff .split-num.match {
+    background: rgba(240,182,72,0.2);
+    color: rgba(240,182,72,0.9);
+    border-right-color: rgba(240,182,72,0.35);
+  }
+
   .split-col-headers {
     display: grid;
     grid-template-columns: 1fr 1fr;
@@ -1254,11 +1267,21 @@
   }
   .search-hit-top {
     display: grid;
-    grid-template-columns: auto minmax(0, 1fr) auto;
+    grid-template-columns: auto minmax(0, 1fr) auto auto;
     align-items: center;
     gap: 8px;
     min-width: 0;
   }
+  .search-hit-diff {
+    display: inline-flex;
+    align-items: center;
+    gap: 5px;
+    padding: 3px 9px;
+    font-size: 11px;
+    font-weight: 800;
+    letter-spacing: 0.04em;
+    white-space: nowrap;
+  }
   .search-hit-top .hash {
     padding: 2px 7px;
     border: 1px solid rgba(90,140,248,0.22);

src/lib/components/CompareDialog.svelte

@@ -15,6 +15,8 @@
     selectedDiffPath: string;
     isBusy: boolean;
     restoreLabel?: string;
+    /** When opened from a search hit, the term to highlight on matching lines. */
+    highlightQuery?: string;
     onClose: () => void;
     onRestore?: () => void;
     onSelectFile: (file: GitDiffFile) => void;
@@ -25,11 +27,25 @@
     selectedDiffPath = "",
     isBusy = false,
     restoreLabel = "",
+    highlightQuery = "",
     onClose = () => {},
     onRestore = undefined,
     onSelectFile = () => {},
   }: Props = $props();
 
+  // Needle = first non-empty line of the search query, lowercased for matching.
+  let highlightNeedle = $derived(
+    highlightQuery
+      .split("\n")
+      .map((line) => line.trim())
+      .find((line) => line.length > 0)
+      ?.toLowerCase() ?? ""
+  );
+
+  function isMatch(text?: string): boolean {
+    return highlightNeedle.length > 0 && !!text && text.toLowerCase().includes(highlightNeedle);
+  }
+
   let beforePane = $state<HTMLDivElement | null>(null);
   let afterPane = $state<HTMLDivElement | null>(null);
   let isSyncingSplitScroll = false;
@@ -259,8 +275,8 @@
                     {#if row.type === "span"}
                       <div class="split-span split-{row.kind}">{row.text}</div>
                     {:else}
-                      <div class="split-num" class:del={row.leftKind === "del"} class:empty={row.leftKind === "empty"}>{row.leftNum ?? ""}</div>
-                      <div class="split-cell" class:del={row.leftKind === "del"} class:empty={row.leftKind === "empty"}>{row.leftText ?? " "}</div>
+                      <div class="split-num" class:del={row.leftKind === "del"} class:empty={row.leftKind === "empty"} class:match={isMatch(row.leftText)}>{row.leftNum ?? ""}</div>
+                      <div class="split-cell" class:del={row.leftKind === "del"} class:empty={row.leftKind === "empty"} class:match={isMatch(row.leftText)}>{row.leftText ?? " "}</div>
                     {/if}
                   {/each}
                 </div>
@@ -276,8 +292,8 @@
                     {#if row.type === "span"}
                       <div class="split-span split-{row.kind}">{row.text}</div>
                     {:else}
-                      <div class="split-num" class:add={row.rightKind === "add"} class:empty={row.rightKind === "empty"}>{row.rightNum ?? ""}</div>
-                      <div class="split-cell" class:add={row.rightKind === "add"} class:empty={row.rightKind === "empty"}>{row.rightText ?? " "}</div>
+                      <div class="split-num" class:add={row.rightKind === "add"} class:empty={row.rightKind === "empty"} class:match={isMatch(row.rightText)}>{row.rightNum ?? ""}</div>
+                      <div class="split-cell" class:add={row.rightKind === "add"} class:empty={row.rightKind === "empty"} class:match={isMatch(row.rightText)}>{row.rightText ?? " "}</div>
                     {/if}
                   {/each}
                 </div>

src/lib/components/GlobalSearchDialog.svelte

@@ -1,5 +1,5 @@
 <script lang="ts">
-  import { CalendarDays, FileCode, LoaderCircle, Search, User, X } from "@lucide/svelte";
+  import { CalendarDays, FileCode, GitCompare, LoaderCircle, Search, User, X } from "@lucide/svelte";
   import type { GitSearchHit } from "../types";
 
   interface Props {
@@ -11,6 +11,7 @@
     onClose: () => void;
     onSearch: (query: string, caseSensitive: boolean, limit: number) => void | Promise<void>;
     onCancel: () => void | Promise<void>;
+    onDiff: (hit: GitSearchHit) => void | Promise<void>;
   }
 
   let {
@@ -22,6 +23,7 @@
     onClose = () => {},
     onSearch = () => {},
     onCancel = () => {},
+    onDiff = () => {},
   }: Props = $props();
 
   let query = $state("");
@@ -148,6 +150,16 @@
                   {#if hit.matches_added > 1}
                     <span class="pill pill-active">+{hit.matches_added} matches</span>
                   {/if}
+                  <button
+                    class="btn-secondary search-hit-diff"
+                    type="button"
+                    disabled={isBusy}
+                    title={`Compare this version of ${hit.file} with the current version`}
+                    onclick={() => onDiff(hit)}
+                  >
+                    <GitCompare size={14} aria-hidden="true" />
+                    DIFF
+                  </button>
                 </header>
 
                 <div class="search-hit-meta">