Re: HTML Export Error : org-export-replace-src-segments-and-examples: Args out of range: 0, 0

[Sankalp <sankalpkhare@gmail.com>]

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Hi Achim,

On 21 March 2012 01:01, Achim Gratz <Stromeko@nexgo.de> wrote:

> Sankalp <sankalpkhare@gmail.com> writes:
> > i.e. at the end I get this error - Args out of range: 0, 0
>
> Well, it tells you that the input to that function was unexpected.  You
> could do M-: (setq debug-on-error) and see what the backtrace turns up.
>
>
Here's what the backtrace says :

Debugger entered--Lisp error: (args-out-of-range 0 0)
  replace-match(#("\n#+BEGIN_html\n<pre class=\"src src-python\"><span
style=\"color: #a020f0;\">import</span> re     <span style=\"color:
#b22222;\"># import the module</span>\n\n<span style=\"color: #000000;
background-color: #ffffff;\">match</span> = re.search(r<span style=\"color:
#8b2252;\">'iiit'</span>,<span style=\"color: #8b2252;\">'iiit hyderabad is
in India'</span>)\n<span style=\"color: #7a378b;\">print</span>
match.group()\n\n<span style=\"color: #000000; background-color:
#ffffff;\">match</span> = re.search(r<span style=\"color:
#8b2252;\">'iiit'</span>,<span style=\"color: #8b2252;\">'iiit is in India.
IIIT offers CS degrees too.'</span>)\n<span style=\"color:
#7a378b;\">print</span> match.group()\n\n<span style=\"color: #000000;
background-color: #ffffff;\">match</span> = re.search(r<span style=\"color:
#8b2252;\">'he'</span>,<span style=\"color: #8b2252;\">'this is the eiffel
tower. The eiffel tower is in France.'</span>)\n<span style=\"color:
#7a378b;\">print</span> match.group()\n\n</pre>\n\n#+END_html\n" 0 14
(original-indentation 3) 14 961 (org-native-text t org-example t
org-protected t original-indentation 3) 961 973 (original-indentation 3)) t
t)
  org-export-replace-src-segments-and-examples()
  org-export-preprocess-string(#("#+TITLE: Regular Expressions in
Python\n#+STARTUP: overview   (others are showall)\n#+STARTUP:
hidestars\n#+OPTIONS: toc:nil\n\n* Introduction\n\n** Mathematical
understanding of regular expressions\n\n\n** regular expressions and
Operations\n - sequencing :: by default\n - grouping  ::  [abc]  one of any
characters in the group\n - alternation :: |\n - repetition :: a* and a+
and a?\n - complementation :: ^\n\n\n\n** From strings to Regular
expressions in Python ::\n   Using the 'r' keyword to indicate regular
expressions\n   instead of strings.\n\n\n** Metacharacters\n\n  - $ ::\n  -
^ :: inside a group, specifies complementation\n  - \\ :: used to escape
from the default meaning to a new meaning.  Eg, \\w, \\[, \\\\, etc.\n  - .
::\n\n** Special symbols ::\n\n  - \\d :: matches any decimal\n  - \\s ::
any whitespace character [\\t\\n\\r\\f\\v]\n  - \\w :: any alphanumeric
character\n  - .  :: matches any character except newline\n  - more\n\n\n**
Compiling regexes\n\n - pat = re.compile(r\"ab*\") :: This \"compiles\" the
regular\n      expression =ab*=.  The result is a pattern object.\n\n**
Using regexes\n\n\n - re.match(r<pattern>, string) :: returns an object
that contains\n      a match at the BEGINNING of the string, else None.\n\n
- re.search(r<pattern>, string) :: returns an object that contains a\n
match ANYWHERE in the string, else None\n\n - re.findall(r<pattern>,
string) :: returns a list that\n      contains all the matches of the
pattern in the string.\n\n - re.finditer(r<pattern>, string) :: returns an
iterator that\n      contains all the matches of the pattern in the
string.\n\n\n** Operations on the matched object\n\n  - group() :: returns
the string matched\n  - start() :: returns the start position of the
match\n  - end() :: returns the end position of the match\n  - span() ::
returns the group of starting and ending positions.\n\n* Examples\n\n  We
cover some simple examples of regular expressions\n\n** Basic
examples\n\n   #+begin_src python :results output :exports both\n
import re     # import the module\n\n     match = re.search(r'iiit','iiit
hyderabad is in India')\n     print match.group()\n\n     match =
re.search(r'iiit','iiit is in India. IIIT offers CS degrees too.')\n
print match.group()\n\n     match = re.search(r'he','this is the eiffel
tower. The eiffel tower is in France.')\n     print match.group()\n\n
#+end_src\n\n   #+results:\n   : iiit\n   : iiit\n   : he\n\n\n** Using
special characters\n\n*** The =^= and =$=\n\n    #+begin_src python
:results output :exports both\n      import re\n      match =
re.search(r'^t123','this t123')\n      print match   # match is
None\n\n      match = re.search(r'^t123','t123 the')\n      print
match.group()\n\n      match = re.search(r't123$','this t123')\n      print
match.group()\n\n      match = re.search(r't123$','t123 the')\n      print
match   # match is None\n\n    #+end_src\n\n    #+results:\n    : None\n
: t123\n    : t123\n    : None\n\n*** The =*= and =+=\n\n    #+begin_src
python :results output :exports both\n      import re\n\n      match =
re.search(r'a*','red box in red light')\n      print match.group()    #
Null String, not None\n\n      match = re.search(r'a+','red box in red
light')\n      print match            # None\n\n      match =
re.search(r'a*','a red box in the red light')\n      print
match.group()\n    #+end_src\n\n    #+results:\n=\nNone\na\n=    :\n    :
None\n    : a\n\n*** The =?= and =.=\n\n    #+begin_src python :results
output :exports both\n      import re\n\n      match = re.search(r'a?','red
box in red light')\n      print match.group() #Null String, not
None\n\n      # pattern is ={'a'}\n      match = re.search(r'a.','red box
in red light')\n      print match # None\n\n      match =
re.search(r'a.','a red box in the red light')\n      print
match.group()\n    #+end_src\n\n    #+results:\n=\nNone\na \n=    :\n    :
None\n    : a\n\n*** The =\\w, \\d, \\W= etc.\n\n    #+begin_src python
:results output :exports both\n      import re\n\n      match =
re.search(r'a\\w+','pelican')\n      print match.group()\n\n      match =
re.search(r'a\\w+','mica')\n      print match #None\n\n      match =
re.search(r'a\\W','pelican is a bird')\n      print match.group()\n\n
match = re.search(r'a\\d','His password is a12@')\n      print
match.group()\n\n    #+end_src\n\n    #+results:\n    : an\n    : None\n
: a \n    : a1\n\n*** Using =[]=\n\n    #+begin_src python :results output
:exports both\n      import re\n\n      match =
re.search(r'[a-d]+pocalypse','apocalypse')\n      print
match.group()\n\n      match = re.search(r'[a-d]+arwin','arwin')\n
print match # None\n\n    #+end_src\n\n    #+results:\n    :
apocalypse\n    : None\n\n*** Using =|=\n\n    #+begin_src python :results
output :exports both\n      import re\n\n      match =
re.search(r'[t|f]ree','tree is free')\n      print match.group()\n\n
match = re.search(r'[t|f]ree','bree')\n      print match #None\n\n
#+end_src\n\n    #+results:\n    : tree\n    : None\n\n*** Escaping special
characters\n\n    #+begin_src python :results output :exports both\n
import re\n\n      match = re.search(r'2\\+3','Compute value of
2+3')\n      print match.group()\n\n    #+end_src\n\n    #+results:\n    :
2+3\n\n\n*** Regex to match a floating point number\n\n    #+begin_src
python :results output :exports both\n      import re\n      \n      match
= re.search(r'[0-9]+\\.[0-9]+','pi is 3.14')\n      print
match.group()\n      \n      match = re.search(r'[0-9]+\\.[0-9]+','There
are 3 primary colors.')\n      print match #None\n      \n      match =
re.search(r'[0-9]+\\.[0-9]+','The date is 15.02.2012')\n      print
match.group() # This matches! It should not! Students should fix this\n
#+end_src\n\n    #+results:\n    : 3.14\n    : None\n    : 15.02\n\n**
Using groups and other advanced constructs\n*** Groups\n    #+begin_src
python :results output :exports both\n      import re\n      \n      match
= re.search(r'([0-9]*\\w+&),([0-9]+)','This&,9')\n      print
match.group()\n      print match.group(0)\n      print
match.group(1)\n      print match.group(2)\n      \n    #+end_src\n\n
#+results:\n    : This&,9\n    : This&,9\n    : This&\n    : 9\n\n***
=findall=\n    #+begin_src python :results output :exports both\n
import re\n      \n      match = re.findall(r'[0-9]+','123 is another
string like 456')\n      print match\n      \n    #+end_src\n\n
#+results:\n    : ['123', '456']\n\n*** =compile=\n    Internally, every
regular expression is translated (i.e,\n    compiled) into an internal
representation (an object).  This\n    compiled object can be saved and
reused, as the\n    following examples show.\n\n    #+begin_src python
:results output :exports both\n      import re\n      \n      pattern =
re.compile(r'[0-9]+')\n      matchlist = pattern.findall('123 is another
string like 456')\n      print matchlist\n      \n    #+end_src\n\n
#+results:\n    : ['123', '456']\n\n* References\n\n  1.
http://docs.python.org/library/re.html\n  2.
http://code.google.com/edu/languages/google-python-class/regular-expressions.html\n
3. http://www.regular-expressions.info/python.html\n\n" 0 8 (fontified t
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t mouse-face highlight face org-link keymap (keymap ... ... ...)) 6720 6721
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(keymap ... ... ...) rear-nonsticky (mouse-face highlight keymap invisible
intangible help-echo org-linked-text)) 6721 6727 (fontified t) 6727 6807
(fontified t org-no-flyspell t mouse-face highlight face org-link keymap
(keymap ... ... ...)) 6807 6808 (fontified t org-no-flyspell t mouse-face
highlight face org-link keymap (keymap ... ... ...) rear-nonsticky
(mouse-face highlight keymap invisible intangible help-echo
org-linked-text)) 6808 6814 (fontified t) 6814 6860 (fontified t
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...)) 6860 6861 (fontified t org-no-flyspell t mouse-face highlight face
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keymap invisible intangible help-echo org-linked-text)) 6861 6863
(fontified t)) :emph-multiline t :for-backend html :skip-before-1st-heading
nil :drawers nil :todo-keywords t :tasks t :tags not-in-toc :priority nil
:footnotes t :timestamps t :archived-trees headline :select-tags ("export")
:exclude-tags ("noexport") :add-text nil :LaTeX-fragments t)
  org-export-as-html(nil)
  call-interactively(org-export-as-html)
  org-export(nil)
  call-interactively(org-export nil nil)

I'm not sure what to make of it, though.


>  > Strangely, doing an export for the 2nd time, without deleting the
> > output html file manages to do it successfully without throwing any
> > errors.
>

There's a correction. On the first pass, no html file is generated. But I
feel it must have something to do with the Python shell buffers that get
created (and are left with the comint:run status) after each export.


>
> Which seems to hint at some undeclared variable that is brought into
> scope by the first run.
>
>
> Regards,
> Achim.
> --
> +<[Q+ Matrix-12 WAVE#46+305 Neuron microQkb Andromeda XTk Blofeld]>+
>
> Factory and User Sound Singles for Waldorf Q+, Q and microQ:
> http://Synth.Stromeko.net/Downloads.html#WaldorfSounds
>
>
>
thanks for the prompt response.

--
Sankalp

*******************************************************
If humans could mate with software, I'd have org-mode's
babies.
                          --- Chris League on Twitter.
               http://orgmode.org/worg/org-quotes.html
*******************************************************

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