emacs_bug

emacs_bug.py

## ...........................................................................
##  DEMO CODE 
## ...........................................................................

## Note - this file may crash emacs on opening. If this is the case, 
## edit the docstring in function0() to close the triple double-quotes (not using emacs!), and the
## file should open fine. You can then crash emacs by deleting one of the triple double quotes!



def padder_function(self, input):    
    """
    
    The font parsing code in emacs uses a JIT approach, so I think we need to pad the initial set of characters
    so that emacs loads up, and then crashes as we scroll through the document. This is speculation though...
    
    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam dictum mi et tincidunt pulvinar. 
    Fusce vitae urna id tortor imperdiet laoreet. Integer lobortis arcu at ullamcorper suscipit. 
    Vivamus tristique, nulla laoreet finibus cursus, lorem nisi malesuada velit, in tempus diam elit et turpis. 
    Pellentesque eu tempus leo. Suspendisse sed fringilla libero, a vulputate nibh. Nam turpis velit, viverra 
    sit amet bibendum ac, semper sed ex. Curabitur vitae ullamcorper mi, in volutpat lorem. Sed nec tellus congue 
    odio mollis volutpat. Pellentesque faucibus at tellus id euismod. Pellentesque pharetra, purus bibendum elementum 
    suscipit, eros erat dictum nunc, hendrerit viverra diam justo id orci. Nunc lorem quam, cursus ac mauris sed, 
    dapibus efficitur urna. Praesent in lacus et nunc porta tempus malesuada sit amet massa. Cras nisl nulla, tristique 
    et turpis quis, euismod ultrices enim. In tincidunt urna sed justo tincidunt, in convallis turpis porta. Praesent 
    gravida mauris nec volutpat iaculis.
    
    """
        
    for i in range(0,100):
        print(i)
    


def function0(value=True):
    """
    # this function signature is unfinished, which, when combined with the single-quotation marks
    # in the docstring for the later functions leads...
    
    ## NOTE - if emacs crashes on opening this file, just add three more double quotes below
    ## this line and all will be well (you can then delete those double quotes from inside 
    ## emacs to crash emacs in realtime
    


    if value:
        self.hardwall=1
    else:
        self.hardwall=0


def function1(self, input):
    """
    
    This has three single-quotation marks in the docstring
    
    Lorem ipsum' 
    Lorem ipsum' 
    Lorem ipsum' 

    """
        
    for i in range(0,100):
        print(i)
    
def function2(self, input):
    """
    
    This has one single-quotation marks in the docstring. Tentatively it seems like you
    need 4 or more single quotation marks to trigger this bug
    
    Lorem ipsum'
    """
        
    for i in range(0,100):
        print(i)