From 0acdce502ca39441bb7e4050efdf43bf03db075d Mon Sep 17 00:00:00 2001
From: ringabout <43030857+ringabout@users.noreply.github.com>
Date: Tue, 2 Jan 2024 14:49:16 +0800
Subject: [PATCH] fixes #23148; restricts infix path concatenation to what
 starts with `/` (#23150)

fixes #23148

(cherry picked from commit c7d742e484e06cdc8d87443a76ec03f1f1724bee)
---
 compiler/modulepaths.nim | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/compiler/modulepaths.nim b/compiler/modulepaths.nim
index e80ea3fa66..fa8fab08a2 100644
--- a/compiler/modulepaths.nim
+++ b/compiler/modulepaths.nim
@@ -36,11 +36,14 @@ proc getModuleName*(conf: ConfigRef; n: PNode): string =
           localError(n.info, "only '/' supported with $package notation")
           result = ""
     else:
-      let modname = getModuleName(conf, n[2])
-      # hacky way to implement 'x / y /../ z':
-      result = getModuleName(conf, n1)
-      result.add renderTree(n0, {renderNoComments}).replace(" ")
-      result.add modname
+      if n0.kind == nkIdent and n0.ident.s[0] == '/':
+        let modname = getModuleName(conf, n[2])
+        # hacky way to implement 'x / y /../ z':
+        result = getModuleName(conf, n1)
+        result.add renderTree(n0, {renderNoComments}).replace(" ")
+        result.add modname
+      else:
+        result = ""
   of nkPrefix:
     when false:
       if n[0].kind == nkIdent and n[0].ident.s == "$":