From 1294385300742acbea5f05c166685bd4a1fab35a Mon Sep 17 00:00:00 2001
From: Evan You <yyx990803@gmail.com>
Date: Tue, 5 Jul 2022 10:32:56 +0800
Subject: [PATCH] fix(compiler-sfc): preserve old deindent behavior for pug

fix #12611
---
 packages/compiler-sfc/src/parseComponent.ts | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/packages/compiler-sfc/src/parseComponent.ts b/packages/compiler-sfc/src/parseComponent.ts
index 0849a649c2e..39322a3efd4 100644
--- a/packages/compiler-sfc/src/parseComponent.ts
+++ b/packages/compiler-sfc/src/parseComponent.ts
@@ -10,6 +10,7 @@ export const DEFAULT_FILENAME = 'anonymous.vue'
 const splitRE = /\r?\n/g
 const replaceRE = /./g
 const isSpecialTag = makeMap('script,style,template', true)
+const isNeedIndentLang = makeMap('pug,jade')
 
 export interface SFCCustomBlock {
   type: string
@@ -177,7 +178,11 @@ export function parseComponent(
     if (depth === 1 && currentBlock) {
       currentBlock.end = start
       let text = source.slice(currentBlock.start, currentBlock.end)
-      if (options.deindent) {
+      if (
+        options.deindent ||
+        // certain langs like pug are indent sensitive, preserve old behavior
+        (currentBlock.lang && isNeedIndentLang(currentBlock.lang))
+      ) {
         text = deindent(text)
       }
       // pad content so that linters and pre-processors can output correct