diff --git a/src/plugins/api.c b/src/plugins/api.c
index 9ed16a66..439814f9 100644
--- a/src/plugins/api.c
+++ b/src/plugins/api.c
@@ -156,13 +156,6 @@ api_win_focus(const char *tag)
     ui_switch_win(num);
 }
 
-void
-api_win_process_line(const char *tag, const char * const line)
-{
-    PluginWindowCallback *window = callbacks_get_window_handler(tag);
-    window->callback_func(window, tag, line);
-}
-
 void
 api_win_show(const char *tag, const char *line)
 {
diff --git a/src/plugins/api.h b/src/plugins/api.h
index 382358ce..f68e8836 100644
--- a/src/plugins/api.h
+++ b/src/plugins/api.h
@@ -46,7 +46,6 @@ int api_win_exists(const char *tag);
 void api_win_create(const char *tag, void *callback,
     void(*callback_func)(PluginWindowCallback *window_callback, char *tag, char *line));
 void api_win_focus(const char *tag);
-void api_win_process_line(const char *tag, const char * const line);
 void api_win_show(const char *tag, const char *line);
 void api_win_show_green(const char *tag, const char *line);
 void api_win_show_red(const char *tag, const char *line);
diff --git a/src/plugins/c_api.c b/src/plugins/c_api.c
index 582d555b..2dad2fff 100644
--- a/src/plugins/c_api.c
+++ b/src/plugins/c_api.c
@@ -135,12 +135,6 @@ c_api_win_focus(char *tag)
     api_win_focus(tag);
 }
 
-void
-c_api_win_process_line(char *tag, char *line)
-{
-    api_win_process_line(tag, line);
-}
-
 void
 c_api_win_show(char *tag, char *line)
 {
@@ -212,7 +206,6 @@ c_api_init(void)
     prof_win_exists = c_api_win_exists;
     prof_win_create = c_api_win_create;
     prof_win_focus = c_api_win_focus;
-    prof_win_process_line = c_api_win_process_line;
     prof_win_show = c_api_win_show;
     prof_win_show_green = c_api_win_show_green;
     prof_win_show_red = c_api_win_show_red;
diff --git a/src/plugins/lua_api.c b/src/plugins/lua_api.c
index c8b0e112..be64e21c 100644
--- a/src/plugins/lua_api.c
+++ b/src/plugins/lua_api.c
@@ -183,15 +183,6 @@ lua_api_win_focus(lua_State *L)
     return 0;
 }
 
-static int
-lua_api_win_process_line(lua_State *L)
-{
-    const char *tag = lua_tostring(L, -2);
-    const char *line = lua_tostring(L, -1);
-    api_win_process_line(tag, strdup(line));
-    return 0;
-}
-
 static int
 lua_api_win_show(lua_State *L)
 {
@@ -348,6 +339,4 @@ lua_api_init(lua_State *L)
     lua_setglobal(L, "prof_win_show_cyan");
     lua_pushcfunction(L, lua_api_win_show_yellow);
     lua_setglobal(L, "prof_win_show_yellow");
-    lua_pushcfunction(L, lua_api_win_process_line);
-    lua_setglobal(L, "prof_win_process_line");
 }
diff --git a/src/plugins/plugins.c b/src/plugins/plugins.c
index 0124f0f4..be6ac182 100644
--- a/src/plugins/plugins.c
+++ b/src/plugins/plugins.c
@@ -160,7 +160,8 @@ plugins_get_lang_string(ProfPlugin *plugin)
 void
 plugins_win_process_line(char *win, const char * const line)
 {
-    api_win_process_line(win, line);
+    PluginWindowCallback *window = callbacks_get_window_handler(win);
+    window->callback_func(window, win, line);
 }
 
 void
diff --git a/src/plugins/profapi.c b/src/plugins/profapi.c
index 2806aafd..f28f801b 100644
--- a/src/plugins/profapi.c
+++ b/src/plugins/profapi.c
@@ -48,7 +48,6 @@ void (*prof_log_error)(const char *message) = NULL;
 int (*prof_win_exists)(PROF_WIN_TAG win) = NULL;
 void (*prof_win_create)(PROF_WIN_TAG win, void(*input_handler)(PROF_WIN_TAG win, char *line)) = NULL;
 void (*prof_win_focus)(PROF_WIN_TAG win) = NULL;
-void (*prof_win_process_line)(PROF_WIN_TAG win, char *line) = NULL;
 void (*prof_win_show)(PROF_WIN_TAG win, char *line) = NULL;
 void (*prof_win_show_green)(PROF_WIN_TAG win, char *line) = NULL;
 void (*prof_win_show_red)(PROF_WIN_TAG win, char *line) = NULL;
diff --git a/src/plugins/profapi.h b/src/plugins/profapi.h
index a9ac87a5..31804195 100644
--- a/src/plugins/profapi.h
+++ b/src/plugins/profapi.h
@@ -48,7 +48,6 @@ void (*prof_log_error)(const char *message);
 int (*prof_win_exists)(PROF_WIN_TAG win);
 void (*prof_win_create)(PROF_WIN_TAG win, void(*input_handler)(PROF_WIN_TAG win, char *line));
 void (*prof_win_focus)(PROF_WIN_TAG win);
-void (*prof_win_process_line)(PROF_WIN_TAG win, char *line);
 void (*prof_win_show)(PROF_WIN_TAG win, char *line);
 void (*prof_win_show_green)(PROF_WIN_TAG win, char *line);
 void (*prof_win_show_red)(PROF_WIN_TAG win, char *line);
diff --git a/src/plugins/python_api.c b/src/plugins/python_api.c
index 7e5b8a1e..8c45d348 100644
--- a/src/plugins/python_api.c
+++ b/src/plugins/python_api.c
@@ -217,20 +217,6 @@ python_api_win_focus(PyObject *self, PyObject *args)
     return Py_BuildValue("");
 }
 
-static PyObject *
-python_api_win_process_line(PyObject *self, PyObject *args)
-{
-    char *tag = NULL;
-    char *line = NULL;
-
-    if (!PyArg_ParseTuple(args, "ss", &tag, &line)) {
-        return Py_BuildValue("");
-    }
-
-    api_win_process_line(tag, line);
-    return Py_BuildValue("");
-}
-
 static PyObject *
 python_api_win_show(PyObject *self, PyObject *args)
 {
@@ -388,7 +374,6 @@ static PyMethodDef apiMethods[] = {
     { "win_show_red", python_api_win_show_red, METH_VARARGS, "Show red text in the window." },
     { "win_show_cyan", python_api_win_show_cyan, METH_VARARGS, "Show cyan text in the window." },
     { "win_show_yellow", python_api_win_show_yellow, METH_VARARGS, "Show yellow text in the window." },
-    { "win_process_line", python_api_win_process_line, METH_VARARGS, "Send a line of input to a window." },
     { NULL, NULL, 0, NULL }
 };
 
diff --git a/src/plugins/ruby_api.c b/src/plugins/ruby_api.c
index 680a5463..6e7d5512 100644
--- a/src/plugins/ruby_api.c
+++ b/src/plugins/ruby_api.c
@@ -182,16 +182,6 @@ ruby_api_win_focus(VALUE self, VALUE v_tag)
     return Qnil;
 }
 
-static VALUE
-ruby_api_win_process_line(VALUE self, VALUE v_tag, VALUE v_line)
-{
-    char *tag = STR2CSTR(v_tag);
-    char *line = STR2CSTR(v_line);
-
-    api_win_process_line(tag, line);
-    return Qnil;
-}
-
 static VALUE
 ruby_api_win_show(VALUE self, VALUE v_tag, VALUE v_line)
 {
@@ -306,7 +296,6 @@ ruby_api_init(void)
     rb_define_module_function(prof_module, "win_exists", RUBY_METHOD_FUNC(ruby_api_win_exists), 1);
     rb_define_module_function(prof_module, "win_create", RUBY_METHOD_FUNC(ruby_api_win_create), 2);
     rb_define_module_function(prof_module, "win_focus", RUBY_METHOD_FUNC(ruby_api_win_focus), 1);
-    rb_define_module_function(prof_module, "win_process_line", RUBY_METHOD_FUNC(ruby_api_win_process_line), 2);
     rb_define_module_function(prof_module, "win_show", RUBY_METHOD_FUNC(ruby_api_win_show), 2);
     rb_define_module_function(prof_module, "win_show_green", RUBY_METHOD_FUNC(ruby_api_win_show_green), 2);
     rb_define_module_function(prof_module, "win_show_red", RUBY_METHOD_FUNC(ruby_api_win_show_red), 2);