Junio C Hamano <gitster@xxxxxxxxx> writes:
>>> > +# Insert a space after a cast
>>> > +# x = (int32) y; not x = (int32)y;
>>> > +SpaceAfterCStyleCast: true
>>>
>>> Hmph, I thought we did the latter, i.e. cast sticks to the casted
>>> expression without SP.
>>
>> I've seen both and I wasn't sure which was the correct form to use.
>
> We do the latter because checkpatch.pl from the kernel project tells
> us to, I think.
Before I forget, there are some rules in checkpatch.pl that I
deliberately ignore while accepting patches from the list.
I appreciate the tool for pointing out overlong lines, but I often
find them easier to read as-is than split into two lines, as the
ones the people send in real life rarely excessively exceed the
80-col limit. We also use things like SHA_CTX that trigger "avoid
camelcase", which I also ignore.
One thing we probably should standardize is the way the width of
bitfields in struct is specified. I think checkpatch.pl wants to do
struct {
unsigned int three_bits : 3;
};
with SP around the colon, but our codebase does not always have the
spaces there, and I see no technical reason not to follow suit, as
long as we are following most of what checkpatch.pl wants us to do.
By the way, I do not recall seeing a rule about this in your clang
format rules. Can we spell it out in there?
I also see this:
WARNING: __printf(string-index, first-to-check) is preferred over
__attribute__((format(printf, string-index, first-to-check)))
but I think it is specific to the kernel source (the macro is
defined in include/linux/compiler-gcc.h and expands to the latter),
so I also ignore it.
checkpatch.pl also warns a SP immediately before HT, which I do pay
attention to, as well as trailing whitespaces. If clang-format can
be told to check that, I think we would want to have such a rule.
For a reference, here is a sample set of changes to cache.h to
squelch most of the warnings and errors checkpatch.pl points out
that I do not ignore.
cache.h | 30 +++++++++++++++---------------
1 file changed, 15 insertions(+), 15 deletions(-)
diff --git a/cache.h b/cache.h
index 4e390e6af8..dec807b3b0 100644
--- a/cache.h
+++ b/cache.h
@@ -25,7 +25,7 @@
#define platform_SHA_CTX SHA_CTX
#define platform_SHA1_Init SHA1_Init
#define platform_SHA1_Update SHA1_Update
-#define platform_SHA1_Final SHA1_Final
+#define platform_SHA1_Final SHA1_Final
#endif
#define git_SHA_CTX platform_SHA_CTX
@@ -260,7 +260,7 @@ static inline void copy_cache_entry(struct cache_entry *dst,
static inline unsigned create_ce_flags(unsigned stage)
{
- return (stage << CE_STAGESHIFT);
+ return stage << CE_STAGESHIFT;
}
#define ce_namelen(ce) ((ce)->ce_namelen)
@@ -317,7 +317,7 @@ static inline unsigned int canon_mode(unsigned int mode)
return S_IFGITLINK;
}
-#define cache_entry_size(len) (offsetof(struct cache_entry,name) + (len) + 1)
+#define cache_entry_size(len) (offsetof(struct cache_entry, name) + (len) + 1)
#define SOMETHING_CHANGED (1 << 0) /* unclassified changes go here */
#define CE_ENTRY_CHANGED (1 << 1)
@@ -373,7 +373,7 @@ extern void free_name_hash(struct index_state *istate);
#define read_cache_unmerged() read_index_unmerged(&the_index)
#define discard_cache() discard_index(&the_index)
#define unmerged_cache() unmerged_index(&the_index)
-#define cache_name_pos(name, namelen) index_name_pos(&the_index,(name),(namelen))
+#define cache_name_pos(name, namelen) index_name_pos(&the_index, (name), (namelen))
#define add_cache_entry(ce, option) add_index_entry(&the_index, (ce), (option))
#define rename_cache_entry_at(pos, new_name) rename_index_entry_at(&the_index, (pos), (new_name))
#define remove_cache_entry_at(pos) remove_index_entry_at(&the_index, (pos))
@@ -1483,10 +1483,10 @@ struct checkout {
const char *base_dir;
int base_dir_len;
struct delayed_checkout *delayed_checkout;
- unsigned force:1,
- quiet:1,
- not_new:1,
- refresh_cache:1;
+ unsigned force : 1,
+ quiet : 1,
+ not_new : 1,
+ refresh_cache : 1;
};
#define CHECKOUT_INIT { NULL, "" }
@@ -1534,7 +1534,7 @@ extern struct alternate_object_database {
char path[FLEX_ARRAY];
} *alt_odb_list;
extern void prepare_alt_odb(void);
-extern void read_info_alternates(const char * relative_base, int depth);
+extern void read_info_alternates(const char *relative_base, int depth);
extern char *compute_alternate_path(const char *path, struct strbuf *err);
typedef int alt_odb_fn(struct alternate_object_database *, void *);
extern int foreach_alt_odb(alt_odb_fn, void*);
@@ -1587,10 +1587,10 @@ extern struct packed_git {
int index_version;
time_t mtime;
int pack_fd;
- unsigned pack_local:1,
- pack_keep:1,
- freshened:1,
- do_not_close:1;
+ unsigned pack_local : 1,
+ pack_keep : 1,
+ freshened : 1,
+ do_not_close : 1;
unsigned char sha1[20];
struct revindex_entry *revindex;
/* something like ".git/objects/pack/xxxxx.pack" */
@@ -1767,10 +1767,10 @@ struct object_info {
union {
/*
* struct {
- * ... Nothing to expose in this case
+ * ... Nothing to expose in this case
* } cached;
* struct {
- * ... Nothing to expose in this case
+ * ... Nothing to expose in this case
* } loose;
*/
struct {
