format-patch: fix two-argument special case, and make it easier to pick single commits

diff --git a/ident.c b/ident.c
index 562f5f18160166506e99aa4f6b5b417cbdc847d8..bc89e1d04c63563c051005754a50247f22256974 100644 (file)
--- a/ident.c
+++ b/ident.c
@@ -8,12 +8,9 @@
 #include "cache.h"
 
 #include <pwd.h>
-#include <time.h>
-#include <ctype.h>
+#include <netdb.h>
 
-static char real_email[1000];
-static char real_name[1000];
-static char real_date[50];
+static char git_default_date[50];
 
 static void copy_gecos(struct passwd *w, char *name, int sz)
 {
@@ -58,22 +55,29 @@ int setup_ident(void)
                die("You don't exist. Go away!");
 
        /* Get the name ("gecos") */
-       copy_gecos(pw, real_name, sizeof(real_name));
+       copy_gecos(pw, git_default_name, sizeof(git_default_name));
 
        /* Make up a fake email address (name + '@' + hostname [+ '.' + domainname]) */
        len = strlen(pw->pw_name);
-       if (len > sizeof(real_email)/2)
+       if (len > sizeof(git_default_email)/2)
                die("Your sysadmin must hate you!");
-       memcpy(real_email, pw->pw_name, len);
-       real_email[len++] = '@';
-       gethostname(real_email + len, sizeof(real_email) - len);
-       if (!strchr(real_email+len, '.')) {
-               len = strlen(real_email);
-               real_email[len++] = '.';
-               getdomainname(real_email+len, sizeof(real_email)-len);
+       memcpy(git_default_email, pw->pw_name, len);
+       git_default_email[len++] = '@';
+       gethostname(git_default_email + len, sizeof(git_default_email) - len);
+       if (!strchr(git_default_email+len, '.')) {
+               struct hostent *he = gethostbyname(git_default_email + len);
+               char *domainname;
+
+               len = strlen(git_default_email);
+               git_default_email[len++] = '.';
+               if (he && (domainname = strchr(he->h_name, '.')))
+                       strncpy(git_default_email + len, domainname + 1, sizeof(git_default_email) - len);
+               else
+                       strncpy(git_default_email + len, "(none)", sizeof(git_default_email) - len);
+               git_default_email[sizeof(git_default_email) - 1] = 0;
        }
        /* And set the default date */
-       datestamp(real_date, sizeof(real_date));
+       datestamp(git_default_date, sizeof(git_default_date));
        return 0;
 }
 
@@ -159,10 +163,10 @@ char *get_ident(const char *name, const char *email, const char *date_str)
        int i;
 
        if (!name)
-               name = real_name;
+               name = git_default_name;
        if (!email)
-               email = real_email;
-       strcpy(date, real_date);
+               email = git_default_email;
+       strcpy(date, git_default_date);
        if (date_str)
                parse_date(date_str, date, sizeof(date));