diff --git a/src/reader.cpp b/src/reader.cpp
index 08f2f323b..62c3af304 100644
--- a/src/reader.cpp
+++ b/src/reader.cpp
@@ -4189,7 +4189,12 @@ bool reader_data_t::jump(jump_direction_t dir, jump_precision_t precision, edita
     return success;
 }
 
-maybe_t<wcstring> reader_readline(int nchars) { return current_data()->readline(nchars); }
+maybe_t<wcstring> reader_readline(int nchars) {
+    auto *data = current_data();
+    // Apply any outstanding commandline changes (#8633).
+    data->apply_commandline_state_changes();
+    return data->readline(nchars);
+}
 
 int reader_reading_interrupted() {
     int res = reader_test_and_clear_interrupted();
diff --git a/tests/pexpects/read.py b/tests/pexpects/read.py
index 3e0d416ef..929f7a796 100644
--- a/tests/pexpects/read.py
+++ b/tests/pexpects/read.py
@@ -54,6 +54,18 @@ expect_prompt()
 expect_marker(2)
 print_var_contents("foo", "bar")
 
+# read -c (see #8633)
+sendline(r"read -c init_text somevar && echo $somevar")
+expect_re("\r\n?read> init_text$")
+sendline("someval")
+expect_prompt("someval\r\n")
+
+sendline(r"read --command='some other text' somevar && echo $somevar")
+expect_re("\r\n?read> some other text$")
+sendline("another value")
+expect_prompt("another value\r\n")
+
+
 # read -s
 
 sendline("read -s foo")