patch 7.4.758
Problem:    When 'conceallevel' is 1 and quitting the command-line window with
            CTRL-C the first character ':' is erased.
Solution:   Reset 'conceallevel' in the command-line window. (Hirohito
            Higashi)
diff --git a/src/ex_getln.c b/src/ex_getln.c
index cd9dffd..c6bbf67 100644
--- a/src/ex_getln.c
+++ b/src/ex_getln.c
@@ -6611,6 +6611,10 @@
 	/* Don't execute autocommands while deleting the window. */
 	block_autocmds();
 # endif
+# ifdef FEAT_CONCEAL
+	/* Avoid command-line window first character being concealed. */
+	curwin->w_p_cole = 0;
+# endif
 	wp = curwin;
 	bp = curbuf;
 	win_goto(old_curwin);
diff --git a/src/version.c b/src/version.c
index 917f71a..4b9329f 100644
--- a/src/version.c
+++ b/src/version.c
@@ -742,6 +742,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    758,
+/**/
     757,
 /**/
     756,