diff --git a/doc/en/weechat_plugin_api.en.txt b/doc/en/weechat_plugin_api.en.txt
index 8705b0327..c135a1b59 100644
--- a/doc/en/weechat_plugin_api.en.txt
+++ b/doc/en/weechat_plugin_api.en.txt
@@ -4046,8 +4046,8 @@ struct t_hook *weechat_hook_process (const char *command,
                                      int (*callback)(void *data,
                                                      const char *command,
                                                      int return_code,
-                                                     const char *stdout,
-                                                     const char *stderr),
+                                                     const char *out,
+                                                     const char *err),
                                      void *callback_data);
 ----------------------------------------
 
@@ -4065,8 +4065,8 @@ Arguments:
 *** '>= 0': child command return code
 *** '< 0': 'WEECHAT_HOOK_PROCESS_OK_RUNNING' (data available, but child still
     running) or 'WEECHAT_HOOK_PROCESS_ERROR' (error when launching command)
-** 'stdout': standard output of command
-** 'stderr': error output of command
+** 'out': standard output of command (stdout)
+** 'err': error output of command (stderr)
 * 'callback_data': pointer given to callback when it is called by WeeChat
 
 Return value:
@@ -4079,7 +4079,7 @@ Example:
 ----------------------------------------
 int
 my_process_cb (void *data, const char *command, int return_code,
-               const char *stdout, const char *stderr)
+               const char *out, const char *err)
 {
     if (return_code == WEECHAT_HOOK_PROCESS_ERROR)
     {
@@ -4092,14 +4092,14 @@ my_process_cb (void *data, const char *command, int return_code,
         weechat_printf (NULL, "return_code = %d", return_code);
     }
     
-    if (stdout)
+    if (out)
     {
-        weechat_printf (NULL, "stdout: %s", stdout);
+        weechat_printf (NULL, "stdout: %s", out);
     }
     
-    if (stderr)
+    if (err)
     {
-        weechat_printf (NULL, "stderr: %s", stderr);
+        weechat_printf (NULL, "stderr: %s", err);
     }
     
     return WEECHAT_RC_OK;
diff --git a/doc/fr/weechat_plugin_api.fr.txt b/doc/fr/weechat_plugin_api.fr.txt
index e0954adca..03042e787 100644
--- a/doc/fr/weechat_plugin_api.fr.txt
+++ b/doc/fr/weechat_plugin_api.fr.txt
@@ -4112,8 +4112,8 @@ struct t_hook *weechat_hook_process (const char *command,
                                      int (*callback)(void *data,
                                                      const char *command,
                                                      int return_code,
-                                                     const char *stdout,
-                                                     const char *stderr),
+                                                     const char *out,
+                                                     const char *err),
                                      void *callback_data);
 ----------------------------------------
 
@@ -4132,8 +4132,8 @@ Paramètres :
 *** '< 0' : 'WEECHAT_HOOK_PROCESS_OK_RUNNING' (données disponibles, mais le
     fils tourne toujours) ou 'WEECHAT_HOOK_PROCESS_ERROR' (erreur en lançant
     la commande)
-** 'stdout' : sortie standard de la commande
-** 'stderr' : erreurs de la commande
+** 'out' : sortie standard de la commande (stdout)
+** 'err' : erreurs de la commande (stderr)
 * 'callback_data' : pointeur donné au "callback" lorsqu'il est appelé par
   WeeChat
 
@@ -4147,7 +4147,7 @@ Exemple :
 ----------------------------------------
 int
 mon_processus_cb (void *data, const char *command, int return_code,
-                  const char *stdout, const char *stderr)
+                  const char *out, const char *err)
 {
     if (return_code == WEECHAT_HOOK_PROCESS_ERROR)
     {
@@ -4160,14 +4160,14 @@ mon_processus_cb (void *data, const char *command, int return_code,
         weechat_printf (NULL, "return_code = %d", return_code);
     }
     
-    if (stdout)
+    if (out)
     {
-        weechat_printf (NULL, "stdout : %s", stdout);
+        weechat_printf (NULL, "stdout : %s", out);
     }
     
-    if (stderr)
+    if (err)
     {
-        weechat_printf (NULL, "stderr : %s", stderr);
+        weechat_printf (NULL, "stderr : %s", err);
     }
     
     return WEECHAT_RC_OK;
diff --git a/src/core/wee-hook.c b/src/core/wee-hook.c
index 6b0dc0a04..e57af00fc 100644
--- a/src/core/wee-hook.c
+++ b/src/core/wee-hook.c
@@ -1231,7 +1231,7 @@ hook_process_child (struct t_hook *hook_process)
 
 void
 hook_process_child_read (struct t_hook *hook_process, int fd,
-                         int stdout, struct t_hook **hook_fd)
+                         int out, struct t_hook **hook_fd)
 {
     char buffer[4096];
     int num_read;
@@ -1244,8 +1244,8 @@ hook_process_child_read (struct t_hook *hook_process, int fd,
             (hook_process->callback_data,
              HOOK_PROCESS(hook_process, command),
              WEECHAT_HOOK_PROCESS_RUNNING,
-             (stdout) ? buffer : NULL,
-             (stdout) ? NULL : buffer);
+             (out) ? buffer : NULL,
+             (out) ? NULL : buffer);
     }
     else if (num_read == 0)
     {
diff --git a/src/core/wee-hook.h b/src/core/wee-hook.h
index 2827d3c31..67b1cac11 100644
--- a/src/core/wee-hook.h
+++ b/src/core/wee-hook.h
@@ -160,8 +160,8 @@ struct t_hook_fd
 /* hook process */
 
 typedef int (t_hook_callback_process)(void *data, const char *command,
-                                      int return_code, const char *stdout,
-                                      const char *stderr);
+                                      int return_code, const char *out,
+                                      const char *err);
 
 struct t_hook_process
 {
diff --git a/src/plugins/scripts/lua/weechat-lua-api.c b/src/plugins/scripts/lua/weechat-lua-api.c
index 6669427c8..c49c1fe22 100644
--- a/src/plugins/scripts/lua/weechat-lua-api.c
+++ b/src/plugins/scripts/lua/weechat-lua-api.c
@@ -3432,7 +3432,7 @@ weechat_lua_api_hook_fd (lua_State *L)
 int
 weechat_lua_api_hook_process_cb (void *data,
                                  const char *command, int return_code,
-                                 const char *stdout, const char *stderr)
+                                 const char *out, const char *err)
 {
     struct t_script_callback *script_callback;
     char *lua_argv[6], str_rc[32], empty_arg[1] = { '\0' };
@@ -3447,8 +3447,8 @@ weechat_lua_api_hook_process_cb (void *data,
         lua_argv[0] = (script_callback->data) ? script_callback->data : empty_arg;
         lua_argv[1] = (command) ? (char *)command : empty_arg;
         lua_argv[2] = str_rc;
-        lua_argv[3] = (stdout) ? (char *)stdout : empty_arg;
-        lua_argv[4] = (stderr) ? (char *)stderr : empty_arg;
+        lua_argv[3] = (out) ? (char *)out : empty_arg;
+        lua_argv[4] = (err) ? (char *)err : empty_arg;
         lua_argv[5] = NULL;
         
         rc = (int *) weechat_lua_exec (script_callback->script,
diff --git a/src/plugins/scripts/perl/weechat-perl-api.c b/src/plugins/scripts/perl/weechat-perl-api.c
index cfe30e4b5..ec150241b 100644
--- a/src/plugins/scripts/perl/weechat-perl-api.c
+++ b/src/plugins/scripts/perl/weechat-perl-api.c
@@ -2886,7 +2886,7 @@ static XS (XS_weechat_api_hook_fd)
 int
 weechat_perl_api_hook_process_cb (void *data,
                                   const char *command, int return_code,
-                                  const char *stdout, const char *stderr)
+                                  const char *out, const char *err)
 {
     struct t_script_callback *script_callback;
     char *perl_argv[6], str_rc[32], empty_arg[1] = { '\0' };
@@ -2901,8 +2901,8 @@ weechat_perl_api_hook_process_cb (void *data,
         perl_argv[0] = (script_callback->data) ? script_callback->data : empty_arg;
         perl_argv[1] = (command) ? (char *)command : empty_arg;
         perl_argv[2] = str_rc;
-        perl_argv[3] = (stdout) ? (char *)stdout : empty_arg;
-        perl_argv[4] = (stderr) ? (char *)stderr : empty_arg;
+        perl_argv[3] = (out) ? (char *)out : empty_arg;
+        perl_argv[4] = (err) ? (char *)err : empty_arg;
         perl_argv[5] = NULL;
         
         rc = (int *) weechat_perl_exec (script_callback->script,
diff --git a/src/plugins/scripts/python/weechat-python-api.c b/src/plugins/scripts/python/weechat-python-api.c
index 303411533..839d4c903 100644
--- a/src/plugins/scripts/python/weechat-python-api.c
+++ b/src/plugins/scripts/python/weechat-python-api.c
@@ -3050,7 +3050,7 @@ weechat_python_api_hook_fd (PyObject *self, PyObject *args)
 int
 weechat_python_api_hook_process_cb (void *data,
                                     const char *command, int return_code,
-                                    const char *stdout, const char *stderr)
+                                    const char *out, const char *err)
 {
     struct t_script_callback *script_callback;
     char *python_argv[6], str_rc[32], empty_arg[1] = { '\0' };
@@ -3065,8 +3065,8 @@ weechat_python_api_hook_process_cb (void *data,
         python_argv[0] = (script_callback->data) ? script_callback->data : empty_arg;
         python_argv[1] = (command) ? (char *)command : empty_arg;
         python_argv[2] = str_rc;
-        python_argv[3] = (stdout) ? (char *)stdout : empty_arg;
-        python_argv[4] = (stderr) ? (char *)stderr : empty_arg;
+        python_argv[3] = (out) ? (char *)out : empty_arg;
+        python_argv[4] = (err) ? (char *)err : empty_arg;
         python_argv[5] = NULL;
         
         rc = (int *) weechat_python_exec (script_callback->script,
diff --git a/src/plugins/scripts/ruby/weechat-ruby-api.c b/src/plugins/scripts/ruby/weechat-ruby-api.c
index 5eb325a1f..81e71274f 100644
--- a/src/plugins/scripts/ruby/weechat-ruby-api.c
+++ b/src/plugins/scripts/ruby/weechat-ruby-api.c
@@ -3524,7 +3524,7 @@ weechat_ruby_api_hook_fd (VALUE class, VALUE fd, VALUE read, VALUE write,
 int
 weechat_ruby_api_hook_process_cb (void *data,
                                   const char *command, int return_code,
-                                  const char *stdout, const char *stderr)
+                                  const char *out, const char *err)
 {
     struct t_script_callback *script_callback;
     char *ruby_argv[6], str_rc[32], empty_arg[1] = { '\0' };
@@ -3539,8 +3539,8 @@ weechat_ruby_api_hook_process_cb (void *data,
         ruby_argv[0] = (script_callback->data) ? script_callback->data : empty_arg;
         ruby_argv[1] = (command) ? (char *)command : empty_arg;
         ruby_argv[2] = str_rc;
-        ruby_argv[3] = (stdout) ? (char *)stdout : empty_arg;
-        ruby_argv[4] = (stderr) ? (char *)stderr : empty_arg;
+        ruby_argv[3] = (out) ? (char *)out : empty_arg;
+        ruby_argv[4] = (err) ? (char *)err : empty_arg;
         ruby_argv[5] = NULL;
         
         rc = (int *) weechat_ruby_exec (script_callback->script,
diff --git a/src/plugins/scripts/script-api.c b/src/plugins/scripts/script-api.c
index 2eee67105..d9b25f0f6 100644
--- a/src/plugins/scripts/script-api.c
+++ b/src/plugins/scripts/script-api.c
@@ -887,8 +887,8 @@ script_api_hook_process (struct t_weechat_plugin *weechat_plugin,
                          int (*callback)(void *data,
                                          const char *command,
                                          int return_code,
-                                         const char *stdout,
-                                         const char *stderr),
+                                         const char *out,
+                                         const char *err),
                          const char *function,
                          const char *data)
 {
diff --git a/src/plugins/scripts/script-api.h b/src/plugins/scripts/script-api.h
index 8d4622c56..2e5445100 100644
--- a/src/plugins/scripts/script-api.h
+++ b/src/plugins/scripts/script-api.h
@@ -158,8 +158,8 @@ extern struct t_hook *script_api_hook_process (struct t_weechat_plugin *weechat_
                                                int (*callback)(void *data,
                                                                const char *command,
                                                                int return_code,
-                                                               const char *stdout,
-                                                               const char *stderr),
+                                                               const char *out,
+                                                               const char *err),
                                                const char *function,
                                                const char *data);
 extern struct t_hook *script_api_hook_connect (struct t_weechat_plugin *weechat_plugin,
diff --git a/src/plugins/scripts/tcl/weechat-tcl-api.c b/src/plugins/scripts/tcl/weechat-tcl-api.c
index 6ec6742c2..f7acb8ae0 100644
--- a/src/plugins/scripts/tcl/weechat-tcl-api.c
+++ b/src/plugins/scripts/tcl/weechat-tcl-api.c
@@ -3284,7 +3284,7 @@ weechat_tcl_api_hook_fd (ClientData clientData, Tcl_Interp *interp,
 int
 weechat_tcl_api_hook_process_cb (void *data,
                                  const char *command, int return_code,
-                                 const char *stdout, const char *stderr)
+                                 const char *out, const char *err)
 {
     struct t_script_callback *script_callback;
     char *tcl_argv[6], str_rc[32], empty_arg[1] = { '\0' };
@@ -3299,8 +3299,8 @@ weechat_tcl_api_hook_process_cb (void *data,
         tcl_argv[0] = (script_callback->data) ? script_callback->data : empty_arg;
         tcl_argv[1] = (command) ? (char *)command : empty_arg;
         tcl_argv[2] = str_rc;
-        tcl_argv[3] = (stdout) ? (char *)stdout : empty_arg;
-        tcl_argv[4] = (stderr) ? (char *)stderr : empty_arg;
+        tcl_argv[3] = (out) ? (char *)out : empty_arg;
+        tcl_argv[4] = (err) ? (char *)err : empty_arg;
         tcl_argv[5] = NULL;
         
         rc = (int *) weechat_tcl_exec (script_callback->script,
diff --git a/src/plugins/weechat-plugin.h b/src/plugins/weechat-plugin.h
index 0dab3ac81..bcc8d9b9f 100644
--- a/src/plugins/weechat-plugin.h
+++ b/src/plugins/weechat-plugin.h
@@ -385,8 +385,8 @@ struct t_weechat_plugin
                                     int (*callback)(void *data,
                                                     const char *command,
                                                     int return_code,
-                                                    const char *stdout,
-                                                    const char *stderr),
+                                                    const char *out,
+                                                    const char *err),
                                     void *callback_data);
     struct t_hook *(*hook_connect) (struct t_weechat_plugin *plugin,
                                     const char *proxy,