diff options
| -rwxr-xr-x | t/t4015-diff-whitespace.sh | 22 | ||||
| -rw-r--r-- | xdiff/xemit.c | 4 |
2 files changed, 24 insertions, 2 deletions
diff --git a/t/t4015-diff-whitespace.sh b/t/t4015-diff-whitespace.sh index ab4670d236..6b087df3dc 100755 --- a/t/t4015-diff-whitespace.sh +++ b/t/t4015-diff-whitespace.sh @@ -2008,4 +2008,26 @@ test_expect_success 'compare mixed whitespace delta across moved blocks' ' test_cmp expected actual ' +# Note that the "6" in the expected hunk header below is funny, since we only +# show 5 lines (the missing one was blank and thus ignored). This is how +# --ignore-blank-lines behaves even without --function-context, and this test +# is just checking the interaction of the two features. Don't take it as an +# endorsement of that output. +test_expect_success 'combine --ignore-blank-lines with --function-context' ' + test_write_lines 1 "" 2 3 4 5 >a && + test_write_lines 1 2 3 4 >b && + test_must_fail git diff --no-index \ + --ignore-blank-lines --function-context a b >actual.raw && + sed -n "/@@/,\$p" <actual.raw >actual && + cat <<-\EOF >expect && + @@ -1,6 +1,4 @@ + 1 + 2 + 3 + 4 + -5 + EOF + test_cmp expect actual +' + test_done diff --git a/xdiff/xemit.c b/xdiff/xemit.c index 7778dc2b19..30713ae9a9 100644 --- a/xdiff/xemit.c +++ b/xdiff/xemit.c @@ -210,7 +210,7 @@ int xdl_emit_diff(xdfenv_t *xe, xdchange_t *xscr, xdemitcb_t *ecb, if (fs1 < 0) fs1 = 0; if (fs1 < s1) { - s2 -= s1 - fs1; + s2 = XDL_MAX(s2 - (s1 - fs1), 0); s1 = fs1; } } @@ -232,7 +232,7 @@ int xdl_emit_diff(xdfenv_t *xe, xdchange_t *xscr, xdemitcb_t *ecb, if (fe1 < 0) fe1 = xe->xdf1.nrec; if (fe1 > e1) { - e2 += fe1 - e1; + e2 = XDL_MIN(e2 + (fe1 - e1), xe->xdf2.nrec); e1 = fe1; } |