I think I finally found the cause
why some aliases containing '$$1' to the left or the right of the '|' in the results window
not always work as expected.
Apparently \t and similar characters combinations like \n are expanded to tab and newline respectively.
However these character combinations can be part of a path like c:\tiddlywiki\newversion\last
test case using the paste command (inserts text in last active window) this is the only command that shows the strange effect all other commands do not give any output.
Create an alias with the following result
demo | paste "$$1"
and the regular expression
Save the alias.
Now open a new notepad (needed for the paste command to work)
THEN reopen(!) FARR and type
Which matches the regular expression ^==(.+)
Go to the demo alias in the results window using your mouse or cursorkeys.
In the information bar it shows
expected result in Notepad window
However result in Notepad looks like
Feature request: Can you please disable expansion of the character combinations when they are part of $$1, $$c .
#filecontents has the same problem, I assume this uses the same programcode.
BTW $$u# work as expected, so no change there ;-)