Maybe. Although you should make a plugin for this.
I tried to do this, so I am not saying that this is the easiest way, but it works.
Here is the code snippet:
import sublime_plugin class PromptCopyLineCommand(sublime_plugin.TextCommand): def run(self, edit): # prompt fo the line # to copy self.view.window().show_input_panel( "Enter the line you want to copy: ", '', self.on_done, # on_done None, # on_change None # on_cancel ) def on_done(self, numLine): if not numLine.isnumeric(): # if input is not a number, prompt again self.view.run_command('prompt_copy_line') return else: numLine = int(numLine) # NOL is the number of line in the file NOL = self.view.rowcol(self.view.size())[0] + 1 # if the line # is not valid # eg 0 or less, or more that the number of line in the file if numLine < 1 or numLine > NOL: # prompt again self.view.run_command('prompt_copy_line') else: # retrieve the content of numLine view = self.view point = view.text_point(numLine-1, 0) line = view.line(point) line = view.substr(line) # do the actual copy self.view.run_command("copy_line", {"string": line}) class CopyLineCommand(sublime_plugin.TextCommand): def run(self, edit, string): # retrieve current offset current_pos = self.view.sel()[0].begin() # retrieve current line number CL = self.view.rowcol(current_pos)[0] # retrieve offset of the BOL offset_BOL = self.view.text_point(CL, 0) self.view.insert(edit, offset_BOL, string+'\n')
Just save this in a python file under Package/User/ (e.g. CopyLine.py )
You can also define a shortcut for it as follows:
{ "keys": ["ctrl+shift+c"], "command": "prompt_copy_line"}
If you have any questions about this, please ask.
PS: demo version 
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