runtime(doc): clarify the effect of 'smarttab'
closes: #17426
Signed-off-by: Damien Lejay <damien@lejay.be>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/doc/quickref.txt b/runtime/doc/quickref.txt
index 349c1af..de902ee 100644
--- a/runtime/doc/quickref.txt
+++ b/runtime/doc/quickref.txt
@@ -1,4 +1,4 @@
-*quickref.txt* For Vim version 9.1. Last change: 2025 Apr 06
+*quickref.txt* For Vim version 9.1. Last change: 2025 Jun 04
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -918,7 +918,7 @@
'signcolumn' 'scl' when to display the sign column
'smartcase' 'scs' no ignore case when pattern has uppercase
'smartindent' 'si' smart autoindenting for C programs
-'smarttab' 'sta' use 'shiftwidth' when inserting <Tab>
+'smarttab' 'sta' <Tab> in leading whitespace indents by 'shiftwidth'
'smoothscroll' 'sms' scroll by screen lines when 'wrap' is set
'softtabstop' 'sts' number of spaces that <Tab> uses while editing
'spell' enable spell checking