This can now be easily done using commands/hotkeys implemented in Obsidian Release v0.8.13
There are now new commands for “Edit file title” and for “Copy file path”.
In AutoHotkey ( / Keyboard Maestro ) we can create sequence:
F6:: ; ← Specify hotkey before double colon.
; 1. Select title.
Send, {F2} ; ← Change F2 to hotkey used in Obsidian for "Edit file title".
; E.g. "Alt+D" → "<!d".
; 2. Copy title.
Clipboard := ""
SendInput, ^c ; ← = Ctrl+C
ClipWait,1
; 3. read clipboard and Trim leading / trailing whitespace (accidentally copied with text).
myvar = %Clipboard%
; 3. Surround title in double square brackets.
myvar := "[[" . myvar . "]]" ; Concatenate strings.
; 4. Put result to clipboard.
Clipboard := myvar
return