From 7dc326fb8c1dfe4a24f6823d9a1e0a3a2dc8e698 Mon Sep 17 00:00:00 2001
From: Ákos Kőrösi <korakos99@gmail.com>
Date: Sun, 24 May 2026 23:15:49 +0200
Subject: update notes

---
 docs/DEVNOTES.md | 24 +++++++++++++++++++++---
 1 file changed, 21 insertions(+), 3 deletions(-)

diff --git a/docs/DEVNOTES.md b/docs/DEVNOTES.md
index 3333943..3413f00 100644
--- a/docs/DEVNOTES.md
+++ b/docs/DEVNOTES.md
@@ -2,11 +2,13 @@
 # TODO
 
 ## CURRENT
-- arithmetic
-- $(cmd) expansion
+- `~` expansion
+- implement dealiasing conditions correctly
+- heap deallocation
 
-## NEXT
+## NEXT TOPICS
 - fd-based redirects
+- arithmetic
 
 ## LATER
 - proper error handling
@@ -14,4 +16,20 @@
 - extensibility hooks and exposed constant
 - freeing allocs
 
+## EVEN LATER
+- globbing
+
 ## BUGS
+
+
+# IMPLEMENTATION NOTES
+(for some of the above)
+
+## Proper error handling
+There should be a global error struct with a string buffer, and functions would be adding context to it.
+We could define a Maybe-like _Result_ "generic" with a macro and wrap the return type of most functions in it, and add the checks for this around calls.
+
+We also have to add error checks around stuff that can go wrong. Particularly around:
+- opening files, opening pipes, managing fd-s
+- malloc/free stuff
+- array accesses (should be bounds checked)
-- 
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