From f99b70233e49db2229350bb82d9ddc6e2f4131c0 Mon Sep 17 00:00:00 2001
From: William Boman <william@redwill.se>
Date: Tue, 13 Jun 2023 15:45:34 +0200
Subject: fix(functional): strip_prefix and strip_suffix should not use
 patterns (#1352)

---
 lua/mason-core/functional/string.lua | 22 ++++++++++++++--------
 1 file changed, 14 insertions(+), 8 deletions(-)

(limited to 'lua/mason-core/functional')

diff --git a/lua/mason-core/functional/string.lua b/lua/mason-core/functional/string.lua
index e9e060f7..c641dcbc 100644
--- a/lua/mason-core/functional/string.lua
+++ b/lua/mason-core/functional/string.lua
@@ -108,21 +108,27 @@ _.trim_end_matches = fun.curryN(function(pattern, str)
 end, 2)
 
 _.strip_prefix = fun.curryN(function(prefix_pattern, str)
-    local _, start = string.find(str, "^" .. prefix_pattern)
-    if start then
-        return str:sub(start + 1)
-    else
+    if #prefix_pattern > #str then
         return str
     end
+    for i = 1, #prefix_pattern do
+        if str:sub(i, i) ~= prefix_pattern:sub(i, i) then
+            return str
+        end
+    end
+    return str:sub(#prefix_pattern + 1)
 end, 2)
 
 _.strip_suffix = fun.curryN(function(suffix_pattern, str)
-    local stop = string.find(str, suffix_pattern .. "$")
-    if stop then
-        return str:sub(1, stop - 1)
-    else
+    if #suffix_pattern > #str then
         return str
     end
+    for i = 1, #suffix_pattern do
+        if str:sub(-i, -i) ~= suffix_pattern:sub(-i, -i) then
+            return str
+        end
+    end
+    return str:sub(1, -#suffix_pattern - 1)
 end, 2)
 
 return _
-- 
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