Name the followed path in the diffstat header

With follow set the diff runs over the whole commit and show_filepair
applies the path, so the header read (limited to '') whether or not a
path was given.

1 file changed, 22 insertions, 0 deletions

diff --git a/tests/t0107-diff.sh b/tests/t0107-diff.shindex 1f12220..861ca44 100755--- a/tests/t0107-diff.sh+++ b/tests/t0107-diff.sh@@ -170,6 +170,28 @@ test_expect_success 'so does the commit page limited to the new name' ' 	! grep "a/file-1 b/file-1" tmp ' +# Following a file diffs the whole commit and keeps the pairs on that path,+# and the header still names the path rather than the empty limit the walk+# runs under.+test_expect_success 'a followed file is diffed as the rename alone' '+	cgitrc_repo followrc moved enable-follow-links=1 &&+	cgit_ok followrc "url=moved/diff/new.txt&follow=1" >tmp &&+	grep "diff --git a/old.txt b/new.txt" tmp &&+	grep "Diffstat</a> (limited to .new.txt.)</div>" tmp &&+	grep "<div class=.diffstat-summary.>1 file changed, 0 insertions, 0 deletions</div>" tmp &&+	! grep "a/file-1 b/file-1" tmp &&+	cgit_ok followrc "url=moved/commit/new.txt&follow=1" >tmp &&+	grep "diff --git a/old.txt b/new.txt" tmp &&+	grep "Diffstat</a> (limited to .new.txt.)</div>" tmp &&+	! grep "a/file-1 b/file-1" tmp+'++test_expect_success 'following with no path limits nothing' '+	cgit_ok followrc "url=moved/commit/&follow=1" >tmp &&+	grep "diff --git a/file-1 b/file-1" tmp &&+	grep "<div class=.diffstat-header.><a href=[^>]*>Diffstat</a></div>" tmp+'+ test_expect_success 'a file added outright still shows as new' ' 	added=$(git -C repos/moved rev-parse HEAD~1) && 	cgit_ok movedrc "url=moved/diff/old.txt&id=$added" >tmp &&
diff --git a/tests/t0107-diff.sh b/tests/t0107-diff.sh
index 1f12220..861ca44 100755
--- a/tests/t0107-diff.sh
+++ b/tests/t0107-diff.sh
@@ -170,6 +170,28 @@ test_expect_success 'so does the commit page limited to the new name' '
 	! grep "a/file-1 b/file-1" tmp
 '
 
+# Following a file diffs the whole commit and keeps the pairs on that path,
+# and the header still names the path rather than the empty limit the walk
+# runs under.
+test_expect_success 'a followed file is diffed as the rename alone' '
+	cgitrc_repo followrc moved enable-follow-links=1 &&
+	cgit_ok followrc "url=moved/diff/new.txt&follow=1" >tmp &&
+	grep "diff --git a/old.txt b/new.txt" tmp &&
+	grep "Diffstat</a> (limited to .new.txt.)</div>" tmp &&
+	grep "<div class=.diffstat-summary.>1 file changed, 0 insertions, 0 deletions</div>" tmp &&
+	! grep "a/file-1 b/file-1" tmp &&
+	cgit_ok followrc "url=moved/commit/new.txt&follow=1" >tmp &&
+	grep "diff --git a/old.txt b/new.txt" tmp &&
+	grep "Diffstat</a> (limited to .new.txt.)</div>" tmp &&
+	! grep "a/file-1 b/file-1" tmp
+'
+
+test_expect_success 'following with no path limits nothing' '
+	cgit_ok followrc "url=moved/commit/&follow=1" >tmp &&
+	grep "diff --git a/file-1 b/file-1" tmp &&
+	grep "<div class=.diffstat-header.><a href=[^>]*>Diffstat</a></div>" tmp
+'
+
 test_expect_success 'a file added outright still shows as new' '
 	added=$(git -C repos/moved rev-parse HEAD~1) &&
 	cgit_ok movedrc "url=moved/diff/old.txt&id=$added" >tmp &&