* [PATCH v2 2/7] bisect: replace hardcoded "bad|good" by variables
2015-06-10 16:24 [PATCH v2 1/7] bisect : correction of typo Antoine Delaite
@ 2015-06-10 16:24 ` Antoine Delaite
2015-06-11 15:27 ` Matthieu Moy
2015-06-10 16:24 ` [PATCH v2 3/7] bisect: simplify the addition of new bisect terms Antoine Delaite
2015-06-10 16:24 ` [PATCH v2 4/7] bisect: add the terms old/new Antoine Delaite
2 siblings, 1 reply; 9+ messages in thread
From: Antoine Delaite @ 2015-06-10 16:24 UTC (permalink / raw)
To: git
Cc: remi.lespinet, louis--alexandre.stuber, remi.galan-alfonso,
guillaume.pages, antoine.delaite, Matthieu.Moy, chriscool,
thomasxnguy, valentinduperray
To add new tags like old/new and have keywords less confusing, the
first step is to avoid hardcoding the keywords.
The default mode is still bad/good.
Signed-off-by: Antoine Delaite <antoine.delaite@ensimag.grenoble-inp.fr>
Signed-off-by: Louis Stuber <stuberl@ensimag.grenoble-inp.fr>
Signed-off-by: Valentin Duperray <Valentin.Duperray@ensimag.imag.fr>
Signed-off-by: Franck Jonas <Franck.Jonas@ensimag.imag.fr>
Signed-off-by: Lucien Kong <Lucien.Kong@ensimag.imag.fr>
Signed-off-by: Thomas Nguy <Thomas.Nguy@ensimag.imag.fr>
Signed-off-by: Huynh Khoi Nguyen Nguyen <Huynh-Khoi-Nguyen.Nguyen@ensimag.imag.fr>
Signed-off-by: Matthieu Moy <Matthieu.Moy@grenoble-inp.fr>
---
bisect.c | 49 ++++++++++++++++++++++++++++++++-----------------
git-bisect.sh | 57 +++++++++++++++++++++++++++++++--------------------------
2 files changed, 63 insertions(+), 43 deletions(-)
mode change 100755 => 100644 git-bisect.sh
diff --git a/bisect.c b/bisect.c
index de92953..eb2f555 100644
--- a/bisect.c
+++ b/bisect.c
@@ -21,6 +21,9 @@ static const char *argv_checkout[] = {"checkout", "-q", NULL, "--", NULL};
static const char *argv_show_branch[] = {"show-branch", NULL, NULL};
static const char *argv_update_ref[] = {"update-ref", "--no-deref", "BISECT_HEAD", NULL, NULL};
+static const char *name_bad;
+static const char *name_good;
+
/* Remember to update object flag allocation in object.h */
#define COUNTED (1u<<16)
@@ -403,10 +406,14 @@ struct commit_list *find_bisection(struct commit_list *list,
static int register_ref(const char *refname, const unsigned char *sha1,
int flags, void *cb_data)
{
- if (!strcmp(refname, "bad")) {
+ char good_prefix[256];
+ strcpy(good_prefix, name_good);
+ strcat(good_prefix, "-");
+
+ if (!strcmp(refname, name_bad)) {
current_bad_oid = xmalloc(sizeof(*current_bad_oid));
hashcpy(current_bad_oid->hash, sha1);
- } else if (starts_with(refname, "good-")) {
+ } else if (starts_with(refname, good_prefix)) {
sha1_array_append(&good_revs, sha1);
} else if (starts_with(refname, "skip-")) {
sha1_array_append(&skipped_revs, sha1);
@@ -634,7 +641,7 @@ static void exit_if_skipped_commits(struct commit_list *tried,
return;
printf("There are only 'skip'ped commits left to test.\n"
- "The first bad commit could be any of:\n");
+ "The first %s commit could be any of:\n", name_bad);
print_commit_list(tried, "%s\n", "%s\n");
if (bad)
printf("%s\n", oid_to_hex(bad));
@@ -732,18 +739,21 @@ static void handle_bad_merge_base(void)
if (is_expected_rev(current_bad_oid)) {
char *bad_hex = oid_to_hex(current_bad_oid);
char *good_hex = join_sha1_array_hex(&good_revs, ' ');
-
- fprintf(stderr, "The merge base %s is bad.\n"
- "This means the bug has been fixed "
- "between %s and [%s].\n",
- bad_hex, bad_hex, good_hex);
-
+ if (!strcmp(name_bad, "bad")) {
+ fprintf(stderr, "The merge base %s is bad.\n"
+ "This means the bug has been fixed "
+ "between %s and [%s].\n",
+ bad_hex, bad_hex, good_hex);
+ } else {
+ die("BUG: terms %s/%s not managed", name_bad, name_good);
+ }
exit(3);
}
- fprintf(stderr, "Some good revs are not ancestor of the bad rev.\n"
+ fprintf(stderr, "Some %s revs are not ancestor of the %s rev.\n"
"git bisect cannot work properly in this case.\n"
- "Maybe you mistook good and bad revs?\n");
+ "Maybe you mistook %s and %s revs?\n",
+ name_good, name_bad, name_good, name_bad);
exit(1);
}
@@ -755,10 +765,10 @@ static void handle_skipped_merge_base(const unsigned char *mb)
warning("the merge base between %s and [%s] "
"must be skipped.\n"
- "So we cannot be sure the first bad commit is "
+ "So we cannot be sure the first %s commit is "
"between %s and %s.\n"
"We continue anyway.",
- bad_hex, good_hex, mb_hex, bad_hex);
+ bad_hex, good_hex, name_bad, mb_hex, bad_hex);
free(good_hex);
}
@@ -839,7 +849,7 @@ static void check_good_are_ancestors_of_bad(const char *prefix, int no_checkout)
int fd;
if (!current_bad_oid)
- die("a bad revision is needed");
+ die("a %s revision is needed", name_bad);
/* Check if file BISECT_ANCESTORS_OK exists. */
if (!stat(filename, &st) && S_ISREG(st.st_mode))
@@ -905,6 +915,8 @@ int bisect_next_all(const char *prefix, int no_checkout)
const unsigned char *bisect_rev;
char bisect_rev_hex[GIT_SHA1_HEXSZ + 1];
+ name_bad="bad";
+ name_good="good";
if (read_bisect_refs())
die("reading bisect refs failed");
@@ -926,8 +938,10 @@ int bisect_next_all(const char *prefix, int no_checkout)
*/
exit_if_skipped_commits(tried, NULL);
- printf("%s was both good and bad\n",
- oid_to_hex(current_bad_oid));
+ printf("%s was both %s and %s\n",
+ oid_to_hex(current_bad_oid),
+ name_good,
+ name_bad);
exit(1);
}
@@ -942,7 +956,8 @@ int bisect_next_all(const char *prefix, int no_checkout)
if (!hashcmp(bisect_rev, current_bad_oid->hash)) {
exit_if_skipped_commits(tried, current_bad_oid);
- printf("%s is the first bad commit\n", bisect_rev_hex);
+ printf("%s is the first %s commit\n", bisect_rev_hex,
+ name_bad);
show_diff_tree(prefix, revs.commits->item);
/* This means the bisection process succeeded. */
exit(10);
diff --git a/git-bisect.sh b/git-bisect.sh
old mode 100755
new mode 100644
index ae3fec2..ce6412f
--- a/git-bisect.sh
+++ b/git-bisect.sh
@@ -32,6 +32,8 @@ OPTIONS_SPEC=
_x40='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
_x40="$_x40$_x40$_x40$_x40$_x40$_x40$_x40$_x40"
+NAME_BAD=bad
+NAME_GOOD=good
bisect_head()
{
@@ -100,8 +102,8 @@ bisect_start() {
break
}
case $bad_seen in
- 0) state='bad' ; bad_seen=1 ;;
- *) state='good' ;;
+ 0) state=$NAME_BAD ; bad_seen=1 ;;
+ *) state=$NAME_GOOD ;;
esac
eval="$eval bisect_write '$state' '$rev' 'nolog' &&"
shift
@@ -184,9 +186,12 @@ bisect_write() {
rev="$2"
nolog="$3"
case "$state" in
- bad) tag="$state" ;;
- good|skip) tag="$state"-"$rev" ;;
- *) die "$(eval_gettext "Bad bisect_write argument: \$state")" ;;
+ "$NAME_BAD")
+ tag="$state" ;;
+ "$NAME_GOOD"|skip)
+ tag="$state"-"$rev" ;;
+ *)
+ die "$(eval_gettext "Bad bisect_write argument: \$state")" ;;
esac
git update-ref "refs/bisect/$tag" "$rev" || exit
echo "# $state: $(git show-branch $rev)" >>"$GIT_DIR/BISECT_LOG"
@@ -230,12 +235,12 @@ bisect_state() {
case "$#,$state" in
0,*)
die "$(gettext "Please call 'bisect_state' with at least one argument.")" ;;
- 1,bad|1,good|1,skip)
+ 1,"$NAME_BAD"|1,"$NAME_GOOD"|1,skip)
rev=$(git rev-parse --verify $(bisect_head)) ||
die "$(gettext "Bad rev input: $(bisect_head)")"
bisect_write "$state" "$rev"
check_expected_revs "$rev" ;;
- 2,bad|*,good|*,skip)
+ 2,"$NAME_BAD"|*,"$NAME_GOOD"|*,skip)
shift
hash_list=''
for rev in "$@"
@@ -249,8 +254,8 @@ bisect_state() {
bisect_write "$state" "$rev"
done
check_expected_revs $hash_list ;;
- *,bad)
- die "$(gettext "'git bisect bad' can take only one argument.")" ;;
+ *,"$NAME_BAD")
+ die "$(eval_gettext "'git bisect \$NAME_BAD' can take only one argument.")" ;;
*)
usage ;;
esac
@@ -259,21 +264,21 @@ bisect_state() {
bisect_next_check() {
missing_good= missing_bad=
- git show-ref -q --verify refs/bisect/bad || missing_bad=t
- test -n "$(git for-each-ref "refs/bisect/good-*")" || missing_good=t
+ git show-ref -q --verify refs/bisect/$NAME_BAD || missing_bad=t
+ test -n "$(git for-each-ref "refs/bisect/$NAME_GOOD-*")" || missing_good=t
case "$missing_good,$missing_bad,$1" in
,,*)
- : have both good and bad - ok
+ : have both $NAME_GOOD and $NAME_BAD - ok
;;
*,)
# do not have both but not asked to fail - just report.
false
;;
- t,,good)
+ t,,"$NAME_GOOD")
# have bad but not good. we could bisect although
# this is less optimum.
- gettextln "Warning: bisecting only with a bad commit." >&2
+ eval_gettextln "Warning: bisecting only with a \$NAME_BAD commit." >&2
if test -t 0
then
# TRANSLATORS: Make sure to include [Y] and [n] in your
@@ -283,7 +288,7 @@ bisect_next_check() {
read yesno
case "$yesno" in [Nn]*) exit 1 ;; esac
fi
- : bisect without good...
+ : bisect without $NAME_GOOD...
;;
*)
@@ -307,7 +312,7 @@ bisect_auto_next() {
bisect_next() {
case "$#" in 0) ;; *) usage ;; esac
bisect_autostart
- bisect_next_check good
+ bisect_next_check $NAME_GOOD
# Perform all bisection computation, display and checkout
git bisect--helper --next-all $(test -f "$GIT_DIR/BISECT_HEAD" && echo --no-checkout)
@@ -316,18 +321,18 @@ bisect_next() {
# Check if we should exit because bisection is finished
if test $res -eq 10
then
- bad_rev=$(git show-ref --hash --verify refs/bisect/bad)
+ bad_rev=$(git show-ref --hash --verify refs/bisect/$NAME_BAD)
bad_commit=$(git show-branch $bad_rev)
- echo "# first bad commit: $bad_commit" >>"$GIT_DIR/BISECT_LOG"
+ echo "# first $NAME_BAD commit: $bad_commit" >>"$GIT_DIR/BISECT_LOG"
exit 0
elif test $res -eq 2
then
echo "# only skipped commits left to test" >>"$GIT_DIR/BISECT_LOG"
- good_revs=$(git for-each-ref --format="%(objectname)" "refs/bisect/good-*")
- for skipped in $(git rev-list refs/bisect/bad --not $good_revs)
+ good_revs=$(git for-each-ref --format="%(objectname)" "refs/bisect/$NAME_GOOD-*")
+ for skipped in $(git rev-list refs/bisect/$NAME_BAD --not $good_revs)
do
skipped_commit=$(git show-branch $skipped)
- echo "# possible first bad commit: $skipped_commit" >>"$GIT_DIR/BISECT_LOG"
+ echo "# possible first $NAME_BAD commit: $skipped_commit" >>"$GIT_DIR/BISECT_LOG"
done
exit $res
fi
@@ -421,7 +426,7 @@ bisect_replay () {
start)
cmd="bisect_start $rev"
eval "$cmd" ;;
- good|bad|skip)
+ $NAME_GOOD|$NAME_BAD|skip)
bisect_write "$command" "$rev" ;;
*)
die "$(gettext "?? what are you talking about?")" ;;
@@ -455,9 +460,9 @@ exit code \$res from '\$command' is < 0 or >= 128" >&2
state='skip'
elif [ $res -gt 0 ]
then
- state='bad'
+ state="$NAME_BAD"
else
- state='good'
+ state="$NAME_GOOD"
fi
# We have to use a subshell because "bisect_state" can exit.
@@ -466,7 +471,7 @@ exit code \$res from '\$command' is < 0 or >= 128" >&2
cat "$GIT_DIR/BISECT_RUN"
- if sane_grep "first bad commit could be any of" "$GIT_DIR/BISECT_RUN" \
+ if sane_grep "first $NAME_BAD commit could be any of" "$GIT_DIR/BISECT_RUN" \
>/dev/null
then
gettextln "bisect run cannot continue any more" >&2
@@ -480,7 +485,7 @@ exit code \$res from '\$command' is < 0 or >= 128" >&2
exit $res
fi
- if sane_grep "is the first bad commit" "$GIT_DIR/BISECT_RUN" >/dev/null
+ if sane_grep "is the first $NAME_BAD commit" "$GIT_DIR/BISECT_RUN" >/dev/null
then
gettextln "bisect run success"
exit 0;
--
1.7.1
^ permalink raw reply related [flat|nested] 9+ messages in thread
* [PATCH v2 3/7] bisect: simplify the addition of new bisect terms
2015-06-10 16:24 [PATCH v2 1/7] bisect : correction of typo Antoine Delaite
2015-06-10 16:24 ` [PATCH v2 2/7] bisect: replace hardcoded "bad|good" by variables Antoine Delaite
@ 2015-06-10 16:24 ` Antoine Delaite
2015-06-10 16:24 ` [PATCH v2 4/7] bisect: add the terms old/new Antoine Delaite
2 siblings, 0 replies; 9+ messages in thread
From: Antoine Delaite @ 2015-06-10 16:24 UTC (permalink / raw)
To: git
Cc: remi.lespinet, louis--alexandre.stuber, remi.galan-alfonso,
guillaume.pages, antoine.delaite, Matthieu.Moy, chriscool,
thomasxnguy, valentinduperray
We create a file BISECT_TERMS in the repository .git to be read during a
bisection. The fonctions to be changed if we add new terms are quite
few.
In git-bisect.sh :
check_and_set_terms
bisect_voc
In bisect.c :
handle_bad_merge_base
Signed-off-by: Antoine Delaite <antoine.delaite@ensimag.grenoble-inp.fr>
Signed-off-by: Louis Stuber <stuberl@ensimag.grenoble-inp.fr>
Signed-off-by: Valentin Duperray <Valentin.Duperray@ensimag.imag.fr>
Signed-off-by: Franck Jonas <Franck.Jonas@ensimag.imag.fr>
Signed-off-by: Lucien Kong <Lucien.Kong@ensimag.imag.fr>
Signed-off-by: Thomas Nguy <Thomas.Nguy@ensimag.imag.fr>
Signed-off-by: Huynh Khoi Nguyen Nguyen <Huynh-Khoi-Nguyen.Nguyen@ensimag.imag.fr>
Signed-off-by: Matthieu Moy <Matthieu.Moy@grenoble-inp.fr>
---
bisect.c | 33 +++++++++++++++++++++++++--
git-bisect.sh | 66 +++++++++++++++++++++++++++++++++++++++++++++++++++-----
2 files changed, 90 insertions(+), 9 deletions(-)
diff --git a/bisect.c b/bisect.c
index eb2f555..827d2f3 100644
--- a/bisect.c
+++ b/bisect.c
@@ -745,7 +745,10 @@ static void handle_bad_merge_base(void)
"between %s and [%s].\n",
bad_hex, bad_hex, good_hex);
} else {
- die("BUG: terms %s/%s not managed", name_bad, name_good);
+ fprintf(stderr, "The merge base %s is %s.\n"
+ "This means the first commit marked %s is "
+ "between %s and [%s].\n",
+ bad_hex, name_bad, name_bad, bad_hex, good_hex);
}
exit(3);
}
@@ -900,6 +903,31 @@ static void show_diff_tree(const char *prefix, struct commit *commit)
}
/*
+ * The terms used for this bisect session are stored in
+ * BISECT_TERMS: it can be bad/good or new/old.
+ * We read them and store them to adapt the messages
+ * accordingly. Default is bad/good.
+ */
+void read_bisect_terms(void)
+{
+ struct strbuf str = STRBUF_INIT;
+ const char *filename = git_path("BISECT_TERMS");
+ FILE *fp = fopen(filename, "r");
+
+ if (!fp) {
+ die("could not read file '%s': %s", filename,
+ strerror(errno));
+ } else {
+ strbuf_getline(&str, fp, '\n');
+ name_bad = strbuf_detach(&str, NULL);
+ strbuf_getline(&str, fp, '\n');
+ name_good = strbuf_detach(&str, NULL);
+ }
+ strbuf_release(&str);
+ fclose(fp);
+}
+
+/*
* We use the convention that exiting with an exit code 10 means that
* the bisection process finished successfully.
* In this case the calling shell script should exit 0.
@@ -915,8 +943,7 @@ int bisect_next_all(const char *prefix, int no_checkout)
const unsigned char *bisect_rev;
char bisect_rev_hex[GIT_SHA1_HEXSZ + 1];
- name_bad="bad";
- name_good="good";
+ read_bisect_terms();
if (read_bisect_refs())
die("reading bisect refs failed");
diff --git a/git-bisect.sh b/git-bisect.sh
index ce6412f..d63b4b0 100644
--- a/git-bisect.sh
+++ b/git-bisect.sh
@@ -77,6 +77,9 @@ bisect_start() {
orig_args=$(git rev-parse --sq-quote "$@")
bad_seen=0
eval=''
+ # start_bad_good is used to detect if we did a
+ # 'git bisect start bad_rev good_rev'
+ start_bad_good=0
if test "z$(git rev-parse --is-bare-repository)" != zfalse
then
mode=--no-checkout
@@ -101,6 +104,9 @@ bisect_start() {
die "$(eval_gettext "'\$arg' does not appear to be a valid revision")"
break
}
+
+ start_bad_good=1
+
case $bad_seen in
0) state=$NAME_BAD ; bad_seen=1 ;;
*) state=$NAME_GOOD ;;
@@ -172,6 +178,11 @@ bisect_start() {
} &&
git rev-parse --sq-quote "$@" >"$GIT_DIR/BISECT_NAMES" &&
eval "$eval true" &&
+ if test $start_bad_good -eq 1 && test ! -s "$GIT_DIR/BISECT_TERMS"
+ then
+ echo "$NAME_BAD" >"$GIT_DIR/BISECT_TERMS" &&
+ echo "$NAME_GOOD" >>"$GIT_DIR/BISECT_TERMS"
+ fi &&
echo "git bisect start$orig_args" >>"$GIT_DIR/BISECT_LOG" || exit
#
# Check if we can proceed to the next bisect state.
@@ -232,6 +243,7 @@ bisect_skip() {
bisect_state() {
bisect_autostart
state=$1
+ check_and_set_terms $state
case "$#,$state" in
0,*)
die "$(gettext "Please call 'bisect_state' with at least one argument.")" ;;
@@ -291,15 +303,17 @@ bisect_next_check() {
: bisect without $NAME_GOOD...
;;
*)
-
+ bad_syn=$(bisect_voc bad)
+ good_syn=$(bisect_voc good)
if test -s "$GIT_DIR/BISECT_START"
then
- gettextln "You need to give me at least one good and one bad revision.
-(You can use \"git bisect bad\" and \"git bisect good\" for that.)" >&2
+
+ eval_gettextln "You need to give me at least one \$bad_syn and one \$good_syn revision.
+(You can use \"git bisect \$bad_syn\" and \"git bisect \$good_syn\" for that.)" >&2
else
- gettextln "You need to start by \"git bisect start\".
-You then need to give me at least one good and one bad revision.
-(You can use \"git bisect bad\" and \"git bisect good\" for that.)" >&2
+ eval_gettextln "You need to start by \"git bisect start\".
+You then need to give me at least one \$good_syn and one \$bad_syn revision.
+(You can use \"git bisect \$bad_syn\" and \"git bisect \$good_syn\" for that.)" >&2
fi
exit 1 ;;
esac
@@ -402,6 +416,7 @@ bisect_clean_state() {
rm -f "$GIT_DIR/BISECT_LOG" &&
rm -f "$GIT_DIR/BISECT_NAMES" &&
rm -f "$GIT_DIR/BISECT_RUN" &&
+ rm -f "$GIT_DIR/BISECT_TERMS" &&
# Cleanup head-name if it got left by an old version of git-bisect
rm -f "$GIT_DIR/head-name" &&
git update-ref -d --no-deref BISECT_HEAD &&
@@ -422,6 +437,8 @@ bisect_replay () {
rev="$command"
command="$bisect"
fi
+ get_terms
+ check_and_set_terms "$command"
case "$command" in
start)
cmd="bisect_start $rev"
@@ -499,11 +516,48 @@ bisect_log () {
cat "$GIT_DIR/BISECT_LOG"
}
+get_terms () {
+ if test -s "$GIT_DIR/BISECT_TERMS"
+ then
+ NAME_BAD="$(sed -n 1p "$GIT_DIR/BISECT_TERMS")"
+ NAME_GOOD="$(sed -n 2p "$GIT_DIR/BISECT_TERMS")"
+ fi
+}
+
+check_and_set_terms () {
+ cmd="$1"
+ case "$cmd" in
+ bad|good)
+ if test -s "$GIT_DIR/BISECT_TERMS" && test "$cmd" != "$NAME_BAD" && test "$cmd" != "$NAME_GOOD"
+ then
+ die "$(eval_gettext "Invalid command: you're currently in a \$NAME_BAD/\$NAME_GOOD bisect.")"
+ fi
+ case "$cmd" in
+ bad|good)
+ if ! test -s "$GIT_DIR/BISECT_TERMS"
+ then
+ echo "bad" >"$GIT_DIR/BISECT_TERMS" &&
+ echo "good" >>"$GIT_DIR/BISECT_TERMS"
+ fi
+ NAME_BAD="bad"
+ NAME_GOOD="good" ;;
+ esac ;;
+ esac
+}
+
+bisect_voc () {
+ case "$1" in
+ bad) echo "bad" ;;
+ good) echo "good" ;;
+ esac
+}
+
case "$#" in
0)
usage ;;
*)
cmd="$1"
+ get_terms
shift
case "$cmd" in
help)
--
1.7.1
^ permalink raw reply related [flat|nested] 9+ messages in thread
* [PATCH v2 4/7] bisect: add the terms old/new
2015-06-10 16:24 [PATCH v2 1/7] bisect : correction of typo Antoine Delaite
2015-06-10 16:24 ` [PATCH v2 2/7] bisect: replace hardcoded "bad|good" by variables Antoine Delaite
2015-06-10 16:24 ` [PATCH v2 3/7] bisect: simplify the addition of new bisect terms Antoine Delaite
@ 2015-06-10 16:24 ` Antoine Delaite
2015-06-10 21:03 ` Junio C Hamano
2 siblings, 1 reply; 9+ messages in thread
From: Antoine Delaite @ 2015-06-10 16:24 UTC (permalink / raw)
To: git
Cc: remi.lespinet, louis--alexandre.stuber, remi.galan-alfonso,
guillaume.pages, antoine.delaite, Matthieu.Moy, chriscool,
thomasxnguy, valentinduperray
When not looking for a regression during a bisect but for a fix or a
change in another given property, it can be confusing to use 'good'
and 'bad'.
This patch introduce `git bisect new` and `git bisect old` as an
alternative to 'bad' and good': the commits which have a certain
property must be marked as `new` and the ones which do not as `old`.
The output will be the first commit after the change in the property.
During a new/old bisect session you cannot use bad/good commands and
vice-versa.
`git bisect replay` works fine for old/new bisect sessions.
Some commands are still not available for old/new:
* git bisect start [<new> [<old>...]] is not possible: the
commits will be treated as bad and good.
* git rev-list --bisect does not treat the revs/bisect/new and
revs/bisect/old-SHA1 files.
* git bisect visualize seem to work partially: the tags are
displayed correctly but the tree is not limited to the bisect
section.
Related discussions:
- http://thread.gmane.org/gmane.comp.version-control.git/86063
introduced bisect fix unfixed to find fix.
- http://thread.gmane.org/gmane.comp.version-control.git/182398
discussion around bisect yes/no or old/new.
- http://thread.gmane.org/gmane.comp.version-control.git/199758
last discussion and reviews
Signed-off-by: Antoine Delaite <antoine.delaite@ensimag.grenoble-inp.fr>
Signed-off-by: Louis Stuber <stuberl@ensimag.grenoble-inp.fr>
Signed-off-by: Valentin Duperray <Valentin.Duperray@ensimag.imag.fr>
Signed-off-by: Franck Jonas <Franck.Jonas@ensimag.imag.fr>
Signed-off-by: Lucien Kong <Lucien.Kong@ensimag.imag.fr>
Signed-off-by: Thomas Nguy <Thomas.Nguy@ensimag.imag.fr>
Signed-off-by: Huynh Khoi Nguyen Nguyen <Huynh-Khoi-Nguyen.Nguyen@ensimag.imag.fr>
Signed-off-by: Matthieu Moy <Matthieu.Moy@grenoble-inp.fr>
---
Documentation/git-bisect.txt | 48 ++++++++++++++++++++++++++++++++++++++++-
bisect.c | 11 +++++++--
git-bisect.sh | 30 +++++++++++++++++--------
t/t6030-bisect-porcelain.sh | 38 +++++++++++++++++++++++++++++++++
4 files changed, 112 insertions(+), 15 deletions(-)
diff --git a/Documentation/git-bisect.txt b/Documentation/git-bisect.txt
index 4cb52a7..3c3021a 100644
--- a/Documentation/git-bisect.txt
+++ b/Documentation/git-bisect.txt
@@ -18,8 +18,8 @@ on the subcommand:
git bisect help
git bisect start [--no-checkout] [<bad> [<good>...]] [--] [<paths>...]
- git bisect bad [<rev>]
- git bisect good [<rev>...]
+ git bisect (bad|new) [<rev>]
+ git bisect (good|old) [<rev>...]
git bisect skip [(<rev>|<range>)...]
git bisect reset [<commit>]
git bisect visualize
@@ -104,6 +104,35 @@ For example, `git bisect reset HEAD` will leave you on the current
bisection commit and avoid switching commits at all, while `git bisect
reset bisect/bad` will check out the first bad revision.
+
+Alternative terms: bisect new and bisect old
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+If you are not at ease with the terms "bad" and "good", perhaps
+because you are looking for the commit that introduced a fix, you can
+alternatively use "new" and "old" instead.
+But note that you cannot mix "bad" and good" with "new" and "old".
+
+------------------------------------------------
+git bisect new [<rev>]
+------------------------------------------------
+
+Marks the commit as new, e.g. "the bug is no longer there", if you are looking
+for a commit that fixed a bug, or "the feature that used to work is now broken
+at this point", if you are looking for a commit that introduced a bug.
+It is the equivalent of "git bisect bad [<rev>]".
+
+------------------------------------------------
+git bisect old [<rev>...]
+------------------------------------------------
+
+Marks the commit as old, as the opposite of 'git bisect new'.
+It is the equivalent of "git bisect good [<rev>...]".
+
+You must run `git bisect start` without commits as argument and run
+`git bisect new <rev>`/`git bisect old <rev>...` after to add the
+commits.
+
Bisect visualize
~~~~~~~~~~~~~~~~
@@ -379,6 +408,21 @@ In this case, when 'git bisect run' finishes, bisect/bad will refer to a commit
has at least one parent whose reachable graph is fully traversable in the sense
required by 'git pack objects'.
+* Look for a fix instead of a regression in the code
++
+------------
+$ git bisect start
+$ git bisect new HEAD # current commit is marked as new
+$ git bisect old HEAD~10 # the tenth commit from now is marked as old
+------------
++
+Let's consider the last commit has a given property, and that we are looking
+for the commit which introduced this property. For each commit the bisection
+guide us to, we will test if the property is present. If it is we will mark
+the commit as new with 'git bisect new', otherwise we will mark it as old.
+At the end of the bisect session, the result will be the first new commit (e.g
+the first one with the property).
+
SEE ALSO
--------
diff --git a/bisect.c b/bisect.c
index 827d2f3..eaa85b6 100644
--- a/bisect.c
+++ b/bisect.c
@@ -744,6 +744,11 @@ static void handle_bad_merge_base(void)
"This means the bug has been fixed "
"between %s and [%s].\n",
bad_hex, bad_hex, good_hex);
+ } else if (!strcmp(name_bad, "new")) {
+ fprintf(stderr, "The merge base %s is new.\n"
+ "The property has changed "
+ "between %s and [%s].\n",
+ bad_hex, bad_hex, good_hex);
} else {
fprintf(stderr, "The merge base %s is %s.\n"
"This means the first commit marked %s is "
@@ -776,11 +781,11 @@ static void handle_skipped_merge_base(const unsigned char *mb)
}
/*
- * "check_merge_bases" checks that merge bases are not "bad".
+ * "check_merge_bases" checks that merge bases are not "bad" (or "new").
*
- * - If one is "bad", it means the user assumed something wrong
+ * - If one is "bad" (or "new"), it means the user assumed something wrong
* and we must exit with a non 0 error code.
- * - If one is "good", that's good, we have nothing to do.
+ * - If one is "good" (or "old"), that's good, we have nothing to do.
* - If one is "skipped", we can't know but we should warn.
* - If we don't know, we should check it out and ask the user to test.
*/
diff --git a/git-bisect.sh b/git-bisect.sh
index d63b4b0..c012f5d 100644
--- a/git-bisect.sh
+++ b/git-bisect.sh
@@ -1,14 +1,16 @@
#!/bin/sh
-USAGE='[help|start|bad|good|skip|next|reset|visualize|replay|log|run]'
+USAGE='[help|start|bad|good|new|old|skip|next|reset|visualize|replay|log|run]'
LONG_USAGE='git bisect help
print this long help message.
git bisect start [--no-checkout] [<bad> [<good>...]] [--] [<pathspec>...]
reset bisect state and start bisection.
-git bisect bad [<rev>]
- mark <rev> a known-bad revision.
-git bisect good [<rev>...]
- mark <rev>... known-good revisions.
+git bisect (bad|new) [<rev>]
+ mark <rev> a known-bad revision/
+ a revision after change in a given property.
+git bisect (good|old) [<rev>...]
+ mark <rev>... known-good revisions/
+ revisions before change in a given property.
git bisect skip [(<rev>|<range>)...]
mark <rev>... untestable revisions.
git bisect next
@@ -288,7 +290,7 @@ bisect_next_check() {
false
;;
t,,"$NAME_GOOD")
- # have bad but not good. we could bisect although
+ # have bad (or new) but not good (or old). we could bisect although
# this is less optimum.
eval_gettextln "Warning: bisecting only with a \$NAME_BAD commit." >&2
if test -t 0
@@ -527,7 +529,7 @@ get_terms () {
check_and_set_terms () {
cmd="$1"
case "$cmd" in
- bad|good)
+ bad|good|new|old)
if test -s "$GIT_DIR/BISECT_TERMS" && test "$cmd" != "$NAME_BAD" && test "$cmd" != "$NAME_GOOD"
then
die "$(eval_gettext "Invalid command: you're currently in a \$NAME_BAD/\$NAME_GOOD bisect.")"
@@ -541,14 +543,22 @@ check_and_set_terms () {
fi
NAME_BAD="bad"
NAME_GOOD="good" ;;
+ new|old)
+ if ! test -s "$GIT_DIR/BISECT_TERMS"
+ then
+ echo "new" >"$GIT_DIR/BISECT_TERMS" &&
+ echo "old" >>"$GIT_DIR/BISECT_TERMS"
+ fi
+ NAME_BAD="new"
+ NAME_GOOD="old" ;;
esac ;;
esac
}
bisect_voc () {
case "$1" in
- bad) echo "bad" ;;
- good) echo "good" ;;
+ bad) echo "bad|old" ;;
+ good) echo "good|new" ;;
esac
}
@@ -564,7 +574,7 @@ case "$#" in
git bisect -h ;;
start)
bisect_start "$@" ;;
- bad|good)
+ bad|good|new|old)
bisect_state "$cmd" "$@" ;;
skip)
bisect_skip "$@" ;;
diff --git a/t/t6030-bisect-porcelain.sh b/t/t6030-bisect-porcelain.sh
index 9e2c203..2f2143b 100755
--- a/t/t6030-bisect-porcelain.sh
+++ b/t/t6030-bisect-porcelain.sh
@@ -759,4 +759,42 @@ test_expect_success '"git bisect bad HEAD" behaves as "git bisect bad"' '
git bisect reset
'
+test_expect_success 'bisect starts with only one new' '
+ git bisect reset &&
+ git bisect start &&
+ git bisect new $HASH4 &&
+ git bisect next
+'
+
+test_expect_success 'bisect does not start with only one old' '
+ git bisect reset &&
+ git bisect start &&
+ git bisect old $HASH1 &&
+ test_must_fail git bisect next
+'
+
+test_expect_success 'bisect start with one new and old' '
+ git bisect reset &&
+ git bisect start &&
+ git bisect old $HASH1 &&
+ git bisect new $HASH4 &&
+ git bisect new &&
+ git bisect new >bisect_result &&
+ grep "$HASH2 is the first new commit" bisect_result &&
+ git bisect log > log_to_replay.txt &&
+ git bisect reset
+'
+
+test_expect_success 'bisect replay with old and new' '
+ git bisect replay log_to_replay.txt > bisect_result &&
+ grep "$HASH2 is the first new commit" bisect_result &&
+ git bisect reset
+'
+
+test_expect_success 'bisect cannot mix old/new and good/bad' '
+ git bisect start &&
+ git bisect bad $HASH4 &&
+ test_must_fail git bisect old $HASH1
+'
+
test_done
--
1.7.1
^ permalink raw reply related [flat|nested] 9+ messages in thread