2 files changed, 49 insertions, 0 deletions
diff --git a/src/nvim/api/private/helpers.c b/src/nvim/api/private/helpers.c
index e736e29e2d..2944925a9c 100644
--- a/src/nvim/api/private/helpers.c
+++ b/src/nvim/api/private/helpers.c
@@ -667,6 +667,22 @@ tabpage_T *find_tab_by_handle(Tabpage tabpage, Error *err)
   return rv;
 }
 
+/// Allocates a String consisting of a single char. Does not support multibyte
+/// characters. The resulting string is also NUL-terminated, to facilitate
+/// interoperating with code using C strings.
+///
+/// @param char the char to convert
+/// @return the resulting String, if the input char was NUL, an
+///         empty String is returned
+String cchar_to_string(char c)
+{
+  char buf[] = { c, NUL };
+  return (String) {
+    .data = xmemdupz(buf, 1),
+    .size = (c != NUL) ? 1 : 0
+  };
+}
+
 /// Copies a C string into a String (binary safe string, characters + length).
 /// The resulting string is also NUL-terminated, to facilitate interoperating
 /// with code using C strings.
@@ -687,6 +703,23 @@ String cstr_to_string(const char *str)
     };
 }
 
+/// Copies buffer to an allocated String.
+/// The resulting string is also NUL-terminated, to facilitate interoperating
+/// with code using C strings.
+///
+/// @param buf the buffer to copy
+/// @param size length of the buffer
+/// @return the resulting String, if the input string was NULL, an
+///         empty String is returned
+String cbuf_to_string(const char *buf, size_t size)
+  FUNC_ATTR_NONNULL_ALL
+{
+  return (String) {
+    .data = xmemdupz(buf, size),
+    .size = size
+  };
+}
+
 /// Creates a String using the given C string. Unlike
 /// cstr_to_string this function DOES NOT copy the C string.
 ///
diff --git a/src/nvim/api/ui_events.in.h b/src/nvim/api/ui_events.in.h
index 1b5d17584f..65357d008a 100644
--- a/src/nvim/api/ui_events.in.h
+++ b/src/nvim/api/ui_events.in.h
@@ -68,4 +68,20 @@ void popupmenu_select(Integer selected)
 void tabline_update(Tabpage current, Array tabs)
   FUNC_API_SINCE(3) FUNC_API_REMOTE_ONLY;
 
+void cmdline_show(Array content, Integer pos, String firstc, String prompt,
+                  Integer indent, Integer level)
+  FUNC_API_SINCE(3) FUNC_API_REMOTE_ONLY;
+void cmdline_pos(Integer pos, Integer level)
+  FUNC_API_SINCE(3) FUNC_API_REMOTE_ONLY;
+void cmdline_special_char(String c, Boolean shift, Integer level)
+  FUNC_API_SINCE(3) FUNC_API_REMOTE_ONLY;
+void cmdline_hide(Integer level)
+  FUNC_API_SINCE(3) FUNC_API_REMOTE_ONLY;
+void cmdline_block_show(Array lines)
+  FUNC_API_SINCE(3) FUNC_API_REMOTE_ONLY;
+void cmdline_block_append(Array lines)
+  FUNC_API_SINCE(3) FUNC_API_REMOTE_ONLY;
+void cmdline_block_hide(void)
+  FUNC_API_SINCE(3) FUNC_API_REMOTE_ONLY;
+
 #endif  // NVIM_API_UI_EVENTS_IN_H