[Enhancement] Interpolation of variables in Find Macros

[vinsworldcom]

Description of the Issue

The shortcuts.xml file recognizes variables like $(NPP_DIRECTORY) and $(CURRENT_WORD) in the <UserDefinedCommands> section, but does not in the <Macros> section. That prevents creating a macro such as:

        <Macro name="Find All CURR_WORD in Current Doc" Ctrl="no" Alt="no" Shift="no" Key="0">
            <Action type="3" message="1700" wParam="0" lParam="0" sParam="" />
            <Action type="3" message="1601" wParam="0" lParam="0" sParam="$(CURRENT_WORD)" />
            <Action type="3" message="1625" wParam="0" lParam="0" sParam="" />
            <Action type="3" message="1702" wParam="0" lParam="2" sParam="" />
            <Action type="3" message="1701" wParam="0" lParam="1641" sParam="" />
        </Macro>

The above macro will search for the literal "$(CURRENT_WORD)" in the current doc, rather than interpolating the variable $(CURRENT_WORD) to the currently highlighted text.

Of course, the user may want to literally search for "$(CURRENT_WORD)"; maybe and escape slash \ can be used such as: \$(CURRENT_WORD) to not interpolate the variable?

I searched for this in issues and on the Community, but didn't find a hit.

Steps to Reproduce the Issue

1. Close all Notepad++
2. Create the above Macro by editing the shortcuts.xml file
3. Open Notepad++
4. Enter some repeated text:

hello
world
hello
all
hello

5. Highlight the first "hello"
6. From the menu: Macro => Find All CURR_WORD in Current Doc

Expected Behavior

Find results window shows:

Search "hello" (3 hits in 1 files of 1 searched)
  new 1 (3 hits)
	 1: hello
	 3: hello
	 5: hello

Actual Behavior

Find results window shows:

Search "$(CURRENT_WORD)" (0 hits in 0 files of 1 searched)

Debug Information

Notepad++ v7.9.3 (64-bit)
Build time : Feb 22 2021 - 18:24:04
Path : C:\usr\bin\npp64\notepad++.exe
Admin mode : OFF
Local Conf mode : ON
OS Name : Windows 10 Enterprise (64-bit)
OS Version : 1909
OS Build : 18363.1377
Current ANSI codepage : 1252
Plugins :