win32: export xappendword()

Export the function xappendword() from make.  Use it in drop and
watch.

Saves 8-80 bytes, an unusually large disparity.

2 files changed, 1 insertions, 16 deletions

diff --git a/miscutils/drop.c b/miscutils/drop.c
index db3d709d1..342de41d6 100644
--- a/miscutils/drop.c
+++ b/miscutils/drop.c
@@ -165,10 +165,8 @@ int drop_main(int argc, char **argv)
                         // Build the command line
                         while (*a) {
                                 char *q = quote_arg(*a++);
-                                char *newcmd = xasprintf("%s %s", cmd, q);
+                                cmd = xappendword(cmd, q);
                                 free(q);
-                                free(cmd);
-                                cmd = newcmd;
                         }
 
                         ZeroMemory(&si, sizeof(STARTUPINFO));
diff --git a/miscutils/make.c b/miscutils/make.c
index eddc07126..07d824752 100644
--- a/miscutils/make.c
+++ b/miscutils/make.c
@@ -333,19 +333,6 @@ auto_concat(const char *s1, const char *s2)
         return auto_string(xasprintf("%s%s", s1, s2));
 }
 
-/*
- * Append a word to a space-separated string of words.  The first
- * call should use a NULL pointer for str, subsequent calls should
- * pass an allocated string which will be freed.
- */
-static char *
-xappendword(const char *str, const char *word)
-{
-        char *newstr = str ? xasprintf("%s %s", str, word) : xstrdup(word);
-        free((void *)str);
-        return newstr;
-}
-
 static unsigned int
 getbucket(const char *name)
 {