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[PATCH 6/6] combine-diff: treat --dirstat like --stat

From
Jeff King <peff@peff.net>
Date
Jan 24, 2019, 12:36 UTC
Message-ID
<20190124123647.GF11354@sigill.intra.peff.net>
In-Reply-To
<20190124122603.GA10415@sigill.intra.peff.net>

Currently "--cc --dirstat" will show nothing for a merge. Like --shortstat and --summary in the previous two patches, it probably makes sense to treat it like we do --stat, and show a stat against the first-parent.

This case is less obviously correct than for --shortstat and --summary, as those are basically variants of --stat themselves. It's possible we could develop a multi-parent combined dirstat format, in which case we might regret defining this first-parent behavior. But the same could be said for --stat, and in the 12+ years of it showing first-parent stats, nobody has complained.

So showing the first-parent dirstat is at least _useful_, and if we later develop a clever multi-parent stat format, we'd probably have to deal with --stat anyway.

Signed-off-by: Jeff King <peff@peff.net>
---
 combine-diff.c                                   | 1 +
 t/t4013-diff-various.sh                          | 1 +
 t/t4013/diff.diff_--dirstat_--cc_master~1_master | 3 +++
 3 files changed, 5 insertions(+)
 create mode 100644 t/t4013/diff.diff_--dirstat_--cc_master~1_master
diff --git a/combine-diff.c b/combine-diff.c
index f42b41d884..23d8fabe75 100644
--- a/combine-diff.c
+++ b/combine-diff.c
@@ -1327,6 +1327,7 @@ static const char *path_path(void *obj)
 #define STAT_FORMAT_MASK (DIFF_FORMAT_NUMSTAT \
 			  | DIFF_FORMAT_SHORTSTAT \
 			  | DIFF_FORMAT_SUMMARY \
+			  | DIFF_FORMAT_DIRSTAT \
 			  | DIFF_FORMAT_DIFFSTAT)
 
 /* find set of paths that every parent touches */
diff --git a/t/t4013-diff-various.sh b/t/t4013-diff-various.sh
index e28953975b..9f8f0e84ad 100755
--- a/t/t4013-diff-various.sh
+++ b/t/t4013-diff-various.sh
@@ -358,6 +358,7 @@ diff --line-prefix=abc master master^ side
 diff --dirstat master~1 master~2
 diff --dirstat initial rearrange
 diff --dirstat-by-file initial rearrange
+diff --dirstat --cc master~1 master
 # No-index --abbrev and --no-abbrev
 diff --raw initial
 :noellipses diff --raw initial
diff --git a/t/t4013/diff.diff_--dirstat_--cc_master~1_master b/t/t4013/diff.diff_--dirstat_--cc_master~1_master
new file mode 100644
index 0000000000..fba4e34175
--- /dev/null
+++ b/t/t4013/diff.diff_--dirstat_--cc_master~1_master
@@ -0,0 +1,3 @@
+$ git diff --dirstat --cc master~1 master
+  40.0% dir/
+$
-- 
2.20.1.842.g8986705066
Previous: Jeff KingNext: Stefan Beller
Message 18 of 19 in “some diff --cc --stat fixes”
  1. 0/6 some diff --cc --stat fixesJeff King, Jan 24, 2019
  2. 1/6 t4006: resurrect commented-out testsJeff King, Jan 24, 2019
  3. Stefan BellerJan 24, 2019
  4. 2/6 diff: clear emitted_symbols flag after useJeff King, Jan 24, 2019
  5. Stefan BellerJan 24, 2019
  6. Jeff KingJan 24, 2019
  7. Junio C HamanoJan 24, 2019
  8. Stefan BellerJan 24, 2019
  9. Jeff KingJan 24, 2019
  10. Jeff KingJan 24, 2019
  11. 3/6 combine-diff: factor out stat-format maskJeff King, Jan 24, 2019
  12. 4/6 combine-diff: treat --shortstat like --statJeff King, Jan 24, 2019
  13. David TurnerJan 24, 2019
  14. Stefan BellerJan 24, 2019
  15. 5/6 combine-diff: treat --summary like --statJeff King, Jan 24, 2019
  16. Stefan BellerJan 24, 2019
  17. Jeff KingJan 24, 2019
  18. 6/6 combine-diff: treat --dirstat like --statJeff King, Jan 24, 2019
  19. Stefan BellerJan 24, 2019

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