From 200162345900136663027b6deae21d72cf30818c Mon Sep 17 00:00:00 2001
From: Cliff Click <cliffc@acm.org>
Date: Thu, 17 Sep 2026 16:39:32 -0700
Subject: Backport string escapes and many op-assign

---
 chapter17/README.md | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

(limited to 'chapter17/README.md')

diff --git a/chapter17/README.md b/chapter17/README.md
index 331cdc3d..cdbca21b 100644
--- a/chapter17/README.md
+++ b/chapter17/README.md
@@ -25,7 +25,12 @@ Allow pre-increment for identifiers only, for now: `--pc`.
 ## Operator assignment
 
 Along the same lines as post-increment, we now allow `op=` assignment
-with semantics similar to other languages.
+on local variables with semantics similar to other languages. The supported
+operators are `+=`, `-=`, `*=`, `/=`, `&=`, `|=`, `^=`, `<<=`, `>>=`, and `>>>=`.
+Bitwise and shift assignments require integer operands; `>>=` preserves the sign
+while `>>>=` shifts in zeros. The assignment evaluates its right-hand side once,
+stores the result narrowed to the variable's type, and yields that stored value.
+Assignments associate right-to-left, as in `x |= y <<= 2`.
 
 `x += y`
 
@@ -159,4 +164,4 @@ for( int i=0; i<ary#; i++ )
   if( ary[i]==e )
     return i;
 return -1;
-```
\ No newline at end of file
+```
-- 
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