From 2ee2fddea27b3829d8872e19855a7e6699e0b652 Mon Sep 17 00:00:00 2001
From: Herrington Darkholme
 <2883231+HerringtonDarkholme@users.noreply.github.com>
Date: Fri, 3 Sep 2021 16:02:15 +0800
Subject: [PATCH] fix(compiler): pick last char when dynamic directive doesn't
 close

e.g. <div :[miss="exp"/> should compiles to [miss] instead of [mis]
---
 .../compiler-core/__tests__/__snapshots__/parse.spec.ts.snap | 2 +-
 packages/compiler-core/src/parse.ts                          | 5 +++--
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/packages/compiler-core/__tests__/__snapshots__/parse.spec.ts.snap b/packages/compiler-core/__tests__/__snapshots__/parse.spec.ts.snap
index d14631367cb..d7ac9888a59 100644
--- a/packages/compiler-core/__tests__/__snapshots__/parse.spec.ts.snap
+++ b/packages/compiler-core/__tests__/__snapshots__/parse.spec.ts.snap
@@ -6260,7 +6260,7 @@ Object {
         Object {
           "arg": Object {
             "constType": 0,
-            "content": "se",
+            "content": "sef",
             "isStatic": false,
             "loc": Object {
               "end": Object {
diff --git a/packages/compiler-core/src/parse.ts b/packages/compiler-core/src/parse.ts
index 907e54d742e..fd31f17aee7 100644
--- a/packages/compiler-core/src/parse.ts
+++ b/packages/compiler-core/src/parse.ts
@@ -814,9 +814,10 @@ function parseAttribute(
             context,
             ErrorCodes.X_MISSING_DYNAMIC_DIRECTIVE_ARGUMENT_END
           )
+          content = content.substr(1)
+        } else {
+          content = content.substr(1, content.length - 2)
         }
-
-        content = content.substr(1, content.length - 2)
       } else if (isSlot) {
         // #1241 special case for v-slot: vuetify relies extensively on slot
         // names containing dots. v-slot doesn't have any modifiers and Vue 2.x