From: Antoine Delaite <antoine.dela...@ensimag.grenoble-inp.fr>

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

Co-authored-by: Louis Stuber <stub...@ensimag.grenoble-inp.fr>
Tweaked-by: Matthieu Moy <matthieu....@imag.fr>
Signed-off-by: Antoine Delaite <antoine.dela...@ensimag.grenoble-inp.fr>
Signed-off-by: Louis Stuber <stub...@ensimag.grenoble-inp.fr>
Signed-off-by: Valentin Duperray <valentin.duper...@ensimag.imag.fr>
Signed-off-by: Franck Jonas <franck.jo...@ensimag.imag.fr>
Signed-off-by: Lucien Kong <lucien.k...@ensimag.imag.fr>
Signed-off-by: Thomas Nguy <thomas.n...@ensimag.imag.fr>
Signed-off-by: Huynh Khoi Nguyen Nguyen 
<huynh-khoi-nguyen.ngu...@ensimag.imag.fr>
Signed-off-by: Matthieu Moy <matthieu....@imag.fr>
---
 bisect.c      | 33 ++++++++++++++++++++++++++--
 git-bisect.sh | 70 +++++++++++++++++++++++++++++++++++++++++++++++++++++------
 revision.c    | 20 +++++++++++++++--
 3 files changed, 112 insertions(+), 11 deletions(-)

diff --git a/bisect.c b/bisect.c
index 9368f6c..c5f96eb 100644
--- a/bisect.c
+++ b/bisect.c
@@ -905,6 +905,36 @@ static void show_diff_tree(const char *prefix, struct 
commit *commit)
 }
 
 /*
+ * The terms used for this bisect session are stored in BISECT_TERMS.
+ * We read them and store them to adapt the messages accordingly.
+ * Default is bad/good.
+ */
+void read_bisect_terms(const char **read_bad, const char **read_good)
+{
+       struct strbuf str = STRBUF_INIT;
+       const char *filename = git_path("BISECT_TERMS");
+       FILE *fp = fopen(filename, "r");
+
+       if (!fp) {
+               if (errno == ENOENT) {
+                       *read_bad = "bad";
+                       *read_good = "good";
+                       return;
+               } else {
+                       die("could not read file '%s': %s", filename,
+                               strerror(errno));
+               }
+       } else {
+               strbuf_getline(&str, fp, '\n');
+               *read_bad = strbuf_detach(&str, NULL);
+               strbuf_getline(&str, fp, '\n');
+               *read_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.
@@ -920,8 +950,7 @@ 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(&name_bad, &name_good);
        if (read_bisect_refs())
                die("reading bisect refs failed");
 
diff --git a/git-bisect.sh b/git-bisect.sh
index ce6412f..7bb18db 100755
--- 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=''
+       # revision_seen is true if a git bisect start
+       # has revision as arguments
+       revision_seen=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
                        }
+
+                       revision_seen=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 $revision_seen -eq 1 && test ! -s "$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 "$GIT_DIR/head-name" &&
        git update-ref -d --no-deref BISECT_HEAD &&
@@ -422,11 +437,13 @@ bisect_replay () {
                        rev="$command"
                        command="$bisect"
                fi
+               get_terms
+               check_and_set_terms "$command"
                case "$command" in
                start)
                        cmd="bisect_start $rev"
                        eval "$cmd" ;;
-               $NAME_GOOD|$NAME_BAD|skip)
+               "$NAME_GOOD"|"$NAME_BAD"|skip)
                        bisect_write "$command" "$rev" ;;
                *)
                        die "$(gettext "?? what are you talking about?")" ;;
@@ -499,11 +516,50 @@ bisect_log () {
        cat "$GIT_DIR/BISECT_LOG"
 }
 
+get_terms () {
+       if test -s "$GIT_DIR/BISECT_TERMS"
+       then
+               {
+               read NAME_BAD
+               read NAME_GOOD
+               } <"$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)
diff --git a/revision.c b/revision.c
index 3ff8723..24ce842 100644
--- a/revision.c
+++ b/revision.c
@@ -21,6 +21,9 @@
 
 volatile show_early_output_fn_t show_early_output;
 
+static const char *name_bad;
+static const char *name_good;
+
 char *path_name(const struct name_path *path, const char *name)
 {
        const struct name_path *p;
@@ -2076,14 +2079,26 @@ void parse_revision_opt(struct rev_info *revs, struct 
parse_opt_ctx_t *ctx,
        ctx->argc -= n;
 }
 
+extern void read_bisect_terms(const char **bad, const char **good);
+
 static int for_each_bad_bisect_ref(const char *submodule, each_ref_fn fn, void 
*cb_data)
 {
-       return for_each_ref_in_submodule(submodule, "refs/bisect/bad", fn, 
cb_data);
+       struct strbuf bisect_refs = STRBUF_INIT;
+       int status;
+       strbuf_addf(&bisect_refs, "refs/bisect/%s", name_bad);
+       status = for_each_ref_in_submodule(submodule, bisect_refs.buf, fn, 
cb_data);
+       strbuf_release(&bisect_refs);
+       return status;
 }
 
 static int for_each_good_bisect_ref(const char *submodule, each_ref_fn fn, 
void *cb_data)
 {
-       return for_each_ref_in_submodule(submodule, "refs/bisect/good", fn, 
cb_data);
+       struct strbuf bisect_refs = STRBUF_INIT;
+       int status;
+       strbuf_addf(&bisect_refs, "refs/bisect/%s", name_good);
+       status = for_each_ref_in_submodule(submodule, bisect_refs.buf, fn, 
cb_data);
+       strbuf_release(&bisect_refs);
+       return status;
 }
 
 static int handle_revision_pseudo_opt(const char *submodule,
@@ -2112,6 +2127,7 @@ static int handle_revision_pseudo_opt(const char 
*submodule,
                handle_refs(submodule, revs, *flags, 
for_each_branch_ref_submodule);
                clear_ref_exclusion(&revs->ref_excludes);
        } else if (!strcmp(arg, "--bisect")) {
+               read_bisect_terms(&name_bad, &name_good);
                handle_refs(submodule, revs, *flags, for_each_bad_bisect_ref);
                handle_refs(submodule, revs, *flags ^ (UNINTERESTING | BOTTOM), 
for_each_good_bisect_ref);
                revs->bisect = 1;
-- 
2.4.4.414.g318df7a.dirty

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