From 35e2d03c2c24462717d774cd9f4eea46f1474ba1 Mon Sep 17 00:00:00 2001 From: Adam Butcher Date: Sat, 4 Aug 2012 21:07:35 +0000 Subject: [PATCH] Fix '\ No newline...' annotation in rewrite diffs When a file that ends with an incomplete line is expressed as a complete rewrite with the -B option, git diff incorrectly appends the incomplete line indicator "\ No newline at end of file" after such a line, rather than writing it on a line of its own (the output codepath for normal output without -B does not have this problem). Add a LF after the incomplete line before writing the "\ No newline ..." out to fix this. Add a couple of tests to confirm that the indicator comment is generated on its own line in both plain diff and rewrite mode. Signed-off-by: Adam Butcher Signed-off-by: Junio C Hamano --- diff.c | 1 + t/t4022-diff-rewrite.sh | 30 ++++++++++++++++++++++++++++++ 2 files changed, 31 insertions(+) diff --git a/diff.c b/diff.c index 62cbe141ef..4c4dc673f8 100644 --- a/diff.c +++ b/diff.c @@ -574,6 +574,7 @@ static void emit_rewrite_lines(struct emit_callback *ecb, if (!endp) { const char *plain = diff_get_color(ecb->color_diff, DIFF_PLAIN); + putc('\n', ecb->opt->file); emit_line_0(ecb->opt, plain, reset, '\\', nneof, strlen(nneof)); } diff --git a/t/t4022-diff-rewrite.sh b/t/t4022-diff-rewrite.sh index c00a94b9ba..2d030a4ec3 100755 --- a/t/t4022-diff-rewrite.sh +++ b/t/t4022-diff-rewrite.sh @@ -66,5 +66,35 @@ test_expect_success 'suppress deletion diff with -B -D' ' grep -v "Linus Torvalds" actual ' +test_expect_success 'prepare a file that ends with an incomplete line' ' + test_seq 1 99 >seq && + printf 100 >>seq && + git add seq && + git commit seq -m seq +' + +test_expect_success 'rewrite the middle 90% of sequence file and terminate with newline' ' + test_seq 1 5 >seq && + test_seq 9331 9420 >>seq && + test_seq 96 100 >>seq +' + +test_expect_success 'confirm that sequence file is considered a rewrite' ' + git diff -B seq >res && + grep "dissimilarity index" res +' + +test_expect_success 'no newline at eof is on its own line without -B' ' + git diff seq >res && + grep "^\\\\ " res && + ! grep "^..*\\\\ " res +' + +test_expect_success 'no newline at eof is on its own line with -B' ' + git diff -B seq >res && + grep "^\\\\ " res && + ! grep "^..*\\\\ " res +' + test_done