Re* [PATCH] "not uptodate" changed to "has local changes"
From: Junio C Hamano <hidden>
Date: 2016-06-15 22:44:37
"Sverre Rabbelier" [off-list ref] writes:
On Sat, May 17, 2008 at 4:44 PM, Steven Walter [off-list ref] wrote:quoted
With this dedication to backwards-compatibility, we'll be at Windows Vista quality in no time.I very much agree here, given the nature of scripts (that is, being very easy to update), I think we should try not to be too strict in backwards-compatibility or we'll lose the flexibility that is very much needed when developing a Good Product (tm) As long as such compatibility breaking changes are marked (in BIG LETTERS) in the changelog/release notes I think that would be a 'sacrifice' we should consider making.
Don't feed the troll by responding to a cheap shot.
The plumbing output is sacred as it is an API. We _could_ change it if it
is broken in such a way that it cannot convey necessary information fully,
but we just do not _reword_ for the sake of rewording. If somebody does
not like it, s/he is complaining too late. S/he should have been here in
early May 2005 and make the language used by the API closer to what humans
read. S/he wasn't here. Too bad, and it is too late.
And people who complain should look at a bigger picture. Look at what was
suggested by one of them and think for five seconds:
$ git checkout mytopic
-fatal: Entry 'frotz' not uptodate. Cannot merge.
+fatal: Entry 'frotz' has local changes. Cannot merge.
If you do not see something wrong with this output, your brain has already
been rotten with use of git for too long a time. Nobody asked us to
"merge" but why are we talking about "Cannot merge"?
Try a different approach along this patch instead.
$ git-checkout pu
error: You have local changes to 'Makefile'; cannot switch branches.
There are other places that ask unpack_trees() to n-way merge, detect
issues _and_ let it issue error message on its own, which people who
complained in this thread can identify and improve, but I did this as a
demonstration and replaced only one message.
Yes I know about C99 structure initializers. I'd love to use them but we
try to be nice to compilers without it.
builtin-checkout.c | 2 ++
unpack-trees.c | 47 +++++++++++++++++++++++++++++++++--------------
unpack-trees.h | 9 +++++++++
3 files changed, 44 insertions(+), 14 deletions(-)
diff --git a/builtin-checkout.c b/builtin-checkout.c
index 10ec137..83da7ca 100644
--- a/builtin-checkout.c
+++ b/builtin-checkout.c@@ -236,6 +236,8 @@ static int merge_working_tree(struct checkout_opts *opts, topts.src_index = &the_index; topts.dst_index = &the_index; + topts.msgs.not_uptodate_file = "You have local changes to '%s'; cannot switch branches."; + refresh_cache(REFRESH_QUIET); if (unmerged_cache()) {
diff --git a/unpack-trees.c b/unpack-trees.c
index 1ab28fd..bec12dc 100644
--- a/unpack-trees.c
+++ b/unpack-trees.c@@ -8,6 +8,28 @@ #include "progress.h" #include "refs.h" +static struct unpack_trees_error_msgs unpack_default_errors = { + /* would_overwrite */ + "Entry '%s' would be overwritten by merge. Cannot merge.", + + /* not_uptodate_file */ + "Entry '%s' not uptodate. Cannot merge.", + + /* not_uptodate_dir */ + "Updating '%s' would lose untracked files in it", + + /* would_lose_untracked */ + "Untracked working tree file '%s' would be %s by merge.", + + /* bind_overlap */ + "Entry '%s' overlaps with '%s'. Cannot bind.", +}; + +#define ERRORMSG(o,fld) \ + ( ((o) && (o)->msgs.fld) \ + ? ((o)->msgs.fld) \ + : (unpack_default_errors.fld) ) + static void add_entry(struct unpack_trees_options *o, struct cache_entry *ce, unsigned int set, unsigned int clear) {
@@ -383,10 +405,9 @@ int unpack_trees(unsigned len, struct tree_desc *t, struct unpack_trees_options /* Here come the merge functions */ -static int reject_merge(struct cache_entry *ce) +static int reject_merge(struct cache_entry *ce, struct unpack_trees_options *o) { - return error("Entry '%s' would be overwritten by merge. Cannot merge.", - ce->name); + return error(ERRORMSG(o, would_overwrite), ce->name); } static int same(struct cache_entry *a, struct cache_entry *b)
@@ -430,7 +451,7 @@ static int verify_uptodate(struct cache_entry *ce, if (errno == ENOENT) return 0; return o->gently ? -1 : - error("Entry '%s' not uptodate. Cannot merge.", ce->name); + error(ERRORMSG(o, not_uptodate_file), ce->name); } static void invalidate_ce_path(struct cache_entry *ce, struct unpack_trees_options *o)
@@ -517,8 +538,7 @@ static int verify_clean_subdirectory(struct cache_entry *ce, const char *action, i = read_directory(&d, ce->name, pathbuf, namelen+1, NULL); if (i) return o->gently ? -1 : - error("Updating '%s' would lose untracked files in it", - ce->name); + error(ERRORMSG(o, not_uptodate_dir), ce->name); free(pathbuf); return cnt; }
@@ -618,8 +638,7 @@ static int verify_absent(struct cache_entry *ce, const char *action, } return o->gently ? -1 : - error("Untracked working tree file '%s' " - "would be %s by merge.", ce->name, action); + error(ERRORMSG(o, would_lose_untracked), ce->name, action); } return 0; }
@@ -751,7 +770,7 @@ int threeway_merge(struct cache_entry **stages, struct unpack_trees_options *o) /* #14, #14ALT, #2ALT */ if (remote && !df_conflict_head && head_match && !remote_match) { if (index && !same(index, remote) && !same(index, head)) - return o->gently ? -1 : reject_merge(index); + return o->gently ? -1 : reject_merge(index, o); return merged_entry(remote, index, o); } /*
@@ -759,7 +778,7 @@ int threeway_merge(struct cache_entry **stages, struct unpack_trees_options *o) * make sure that it matches head. */ if (index && !same(index, head)) - return o->gently ? -1 : reject_merge(index); + return o->gently ? -1 : reject_merge(index, o); if (head) { /* #5ALT, #15 */
@@ -901,11 +920,11 @@ int twoway_merge(struct cache_entry **src, struct unpack_trees_options *o) else { /* all other failures */ if (oldtree) - return o->gently ? -1 : reject_merge(oldtree); + return o->gently ? -1 : reject_merge(oldtree, o); if (current) - return o->gently ? -1 : reject_merge(current); + return o->gently ? -1 : reject_merge(current, o); if (newtree) - return o->gently ? -1 : reject_merge(newtree); + return o->gently ? -1 : reject_merge(newtree, o); return -1; } }
@@ -931,7 +950,7 @@ int bind_merge(struct cache_entry **src, o->merge_size); if (a && old) return o->gently ? -1 : - error("Entry '%s' overlaps with '%s'. Cannot bind.", a->name, old->name); + error(ERRORMSG(o, bind_overlap), a->name, old->name); if (!a) return keep_entry(old, o); else
diff --git a/unpack-trees.h b/unpack-trees.h
index d436d6c..94e5672 100644
--- a/unpack-trees.h
+++ b/unpack-trees.h@@ -8,6 +8,14 @@ struct unpack_trees_options; typedef int (*merge_fn_t)(struct cache_entry **src, struct unpack_trees_options *options); +struct unpack_trees_error_msgs { + const char *would_overwrite; + const char *not_uptodate_file; + const char *not_uptodate_dir; + const char *would_lose_untracked; + const char *bind_overlap; +}; + struct unpack_trees_options { unsigned int reset:1, merge:1,
@@ -23,6 +31,7 @@ struct unpack_trees_options { int pos; struct dir_struct *dir; merge_fn_t fn; + struct unpack_trees_error_msgs msgs; int head_idx; int merge_size;