Cleanup, prep for editor

cmake/modules/envtoh.cmake

@@ -24,8 +24,8 @@ foreach(line IN LISTS ENV_LINES)
     continue()
   endif()
 
-  # Expect KEY=VALUE
-  if(NOT line MATCHES "^[A-Za-z_][A-Za-z0-9_]*=")
+  # Expect KEY=VALUE (allow spaces around '=')
+  if(NOT line MATCHES "^[A-Za-z_][A-Za-z0-9_]*[ \t]*=[ \t]*")
     message(WARNING "Skipping invalid line in ${ENV_FILE}: '${line}'")
     continue()
   endif()
@@ -34,9 +34,8 @@ foreach(line IN LISTS ENV_LINES)
   string(REGEX MATCH "^[A-Za-z_][A-Za-z0-9_]*" KEY "${line}")
   string(LENGTH "${KEY}" key_len)
 
-  # Extract value
-  string(SUBSTRING "${line}" ${key_len} -1 rest)
-  string(REGEX REPLACE "^[ \t]*=[ \t]*" "" RAW_VALUE "${rest}")
+  # Extract value (allow spaces around '=')
+  string(REGEX REPLACE "^[A-Za-z_][A-Za-z0-9_]*[ \t]*=[ \t]*" "" RAW_VALUE "${line}")
 
   # Lowercase copy for boolean detection
   string(TOLOWER "${RAW_VALUE}" VALUE_LC)