log.decorate: only ignore it under "log --pretty=raw"

Unlike notes that are often multi-line and disrupting to be placed in many
output formats, a decoration is designed to be a small token that can be
tacked after an existing line of the output where a commit object name sits.
Disabling log.decorate for something like "log --oneline" would defeat the
purpose of the configuration.

We _might_ want to change it further in the future to force scripts that
do not want to be broken by random end user configurations to explicitly
say "log --no-decorate", but that would be an incompatible change that
needs the usual multi-release-cycle deprecation process.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

builtin-log.c

@@ -108,10 +108,11 @@ static void cmd_log_init(int argc, const char **argv, const char *prefix,
 	}
 
 	/*
-	 * defeat log.decorate configuration interacting with --pretty
+	 * defeat log.decorate configuration interacting with --pretty=raw
 	 * from the command line.
 	 */
-	if (!decoration_given && rev->pretty_given)
+	if (!decoration_given && rev->pretty_given
+	    && rev->commit_format == CMIT_FMT_RAW)
 		decoration_style = 0;
 
 	if (decoration_style) {

t/t4202-log.sh

@@ -390,62 +390,50 @@ test_expect_success 'log --graph with merge' '
 test_expect_success 'log.decorate configuration' '
 	git config --unset-all log.decorate || :
 
-	git log >expect.none &&
-	git log --decorate >expect.short &&
-	git log --decorate=full >expect.full &&
-	git log --oneline >expect.oneline &&
+	git log --oneline >expect.none &&
+	git log --oneline --decorate >expect.short &&
+	git log --oneline --decorate=full >expect.full &&
 
 	echo "[log] decorate" >>.git/config &&
-	git log >actual &&
-	test_cmp expect.short actual &&
 	git log --oneline >actual &&
-	test_cmp expect.oneline actual &&
+	test_cmp expect.short actual &&
 
 	git config --unset-all log.decorate &&
 	git config log.decorate true &&
-	git log >actual &&
+	git log --oneline >actual &&
 	test_cmp expect.short actual &&
-	git log --decorate=full >actual &&
+	git log --oneline --decorate=full >actual &&
 	test_cmp expect.full actual &&
-	git log --decorate=no >actual &&
+	git log --oneline --decorate=no >actual &&
 	test_cmp expect.none actual &&
-	git log --oneline >actual &&
-	test_cmp expect.oneline actual &&
 
 	git config --unset-all log.decorate &&
 	git config log.decorate no &&
-	git log >actual &&
+	git log --oneline >actual &&
 	test_cmp expect.none actual &&
-	git log --decorate >actual &&
+	git log --oneline --decorate >actual &&
 	test_cmp expect.short actual &&
-	git log --decorate=full >actual &&
+	git log --oneline --decorate=full >actual &&
 	test_cmp expect.full actual &&
-	git log --oneline >actual &&
-	test_cmp expect.oneline actual &&
 
 	git config --unset-all log.decorate &&
 	git config log.decorate short &&
-	git log >actual &&
+	git log --oneline >actual &&
 	test_cmp expect.short actual &&
-	git log --no-decorate >actual &&
+	git log --oneline --no-decorate >actual &&
 	test_cmp expect.none actual &&
-	git log --decorate=full >actual &&
+	git log --oneline --decorate=full >actual &&
 	test_cmp expect.full actual &&
-	git log --oneline >actual &&
-	test_cmp expect.oneline actual &&
 
 	git config --unset-all log.decorate &&
 	git config log.decorate full &&
-	git log >actual &&
+	git log --oneline >actual &&
 	test_cmp expect.full actual &&
-	git log --no-decorate >actual &&
+	git log --oneline --no-decorate >actual &&
 	test_cmp expect.none actual &&
-	git log --decorate >actual &&
+	git log --oneline --decorate >actual &&
 	test_cmp expect.short actual
-	git log --oneline >actual &&
-	test_cmp expect.oneline actual &&
 
-	:
 '
 
 test_done