在使用pidgin-sipe时，使用pidgin中传入消息的无用换行符

Question

当使用pidgin-sipe和pidgin时，传入的消息在实际消息周围有大量的空白。启用/禁用传入消息的格式设置没有任何区别。见这里：

浅绿色是我(没有空格)，深绿色是我的朋友使用Skype为商业客户。在他看来一切都很正常。为什么传入的消息周围有这么多空白(空行)？怎么解决这个问题呢？

Answer 1

我通过黑客攻击我自己搞定了这个。这可能是不好的代码，但是我对C不在行。它所做的只是删除消息中出现的<BR>。下面是补丁，以防其他人遇到同样的问题：

*** purple-im.c     2016-12-18 18:19:07.000000000 +0100
--- /tmp/purple-im.c        2018-04-18 15:49:48.915516011 +0200
***************
*** 43,60 ****
  #include "sipe-core.h"
  #include "sipe-nls.h"

  void sipe_backend_im_message(struct sipe_core_public *sipe_public,
                         const gchar *from,
                         const gchar *html)
  {
    struct sipe_backend_private *purple_private = sipe_public->backend_private;
    purple_serv_got_im(purple_private->gc,
                from,
!               html,
                0,
                time(NULL));
  }

  void sipe_backend_im_topic(struct sipe_core_public *sipe_public,
                       const gchar *with,
                       const gchar *topic)
--- 43,102 ----
  #include "sipe-core.h"
  #include "sipe-nls.h"

+ static void str_replace(gchar *target, const gchar *needle, const gchar *replacement)
+ {
+
+     gchar buffer[1024] = { 0 };
+     gchar *insert_point = &buffer[0];
+     const gchar *tmp = target;
+     size_t needle_len = strlen(needle);
+     size_t repl_len = strlen(replacement);
+
+     while (1) {
+         const gchar *p = strstr(tmp, needle);
+
+         // walked past last occurrence of needle; copy remaining part
+         if (p == NULL) {
+             strcpy(insert_point, tmp);
+             break;
+         }
+
+         // copy part before needle
+         memcpy(insert_point, tmp, p - tmp);
+         insert_point += p - tmp;
+
+         // copy replacement string
+         memcpy(insert_point, replacement, repl_len);
+         insert_point += repl_len;
+
+         // adjust pointers, move on
+         tmp = p + needle_len;
+     }
+
+     // write altered string back to target
+     strcpy(target, buffer);
+ }
+
  void sipe_backend_im_message(struct sipe_core_public *sipe_public,
                         const gchar *from,
                         const gchar *html)
  {
    struct sipe_backend_private *purple_private = sipe_public->backend_private;
+
+     const size_t target_size = strlen(html) + 1;
+     gchar copy_of_html[target_size];
+     strncpy(copy_of_html, html, target_size);
+
+     str_replace(copy_of_html, "<BR>", "");
+
    purple_serv_got_im(purple_private->gc,
                from,
!               copy_of_html,
                0,
                time(NULL));
  }

+
  void sipe_backend_im_topic(struct sipe_core_public *sipe_public,
                       const gchar *with,
                       const gchar *topic)