Change the display style of the text on the STACKLINE.

[hongy...@gmail.com]

On Saturday, September 11, 2021 at 7:43:44 AM UTC+8, hongy... at gmail.com wrote:
> On Friday, September 10, 2021 at 2:12:31 PM UTC+8, Roland Mueller wrote: 
> > pe 10. syysk. 2021 klo 8.53 hongy... at gmail.com (hongy... at gmail.com) 
> > kirjoitti: 
> > > On Thursday, September 9, 2021 at 8:57:37 PM UTC+8, Roland Mueller wrote: 
> > > > Hello 
> > > > 
> > > > to 9. syysk. 2021 klo 6.53 hongy... at gmail.com (hongy... at gmail.com) 
> > > > kirjoitti: 
> > > > > I'm using the following code in my forked project [1]: 
> > > > > 
> > > > > percol.view.STACKLINE = 'Fold:F1,F2,F3 Push:C-p Pop:M-p Script:M-s 
> > > Dir:M-d 
> > > > > Dircmd:M-b' 
> > > > > 
> > > > > I would like to change the display style of the text mentioned above, 
> > > for 
> > > > > example, to underline some characters in it, as shown below: 
> > > > > 
> > > > > _D_ir:M-d 
> > > > > 
> > > > > 
> > > > You can use e.g. str.replace() or re.sub() 
> > > > 
> > > > >>> percol.view.STACKLINE = percol.view.STACKLINE.replace('D', '_D_') 
> > > > Result: 'Fold:F1,F2,F3 Push:C-p Pop:M-p Script:M-s _D_ir:M-d 
> > > _D_ircmd:M-b' 
> > > > 
> > > > >>> import re 
> > > > 
> > > > Replace D with _D_ 
> > > > >>> percol.view.STACKLINE = re.sub(r'([D])', 
> > > > r'_\1_', percol.view.STACKLINE) 
> > > > Result: 'Fold:F1,F2,F3 Push:C-p Pop:M-p Script:M-s _D_ir:M-d 
> > > _D_ircmd:M-b' 
> > > > 
> > > > Replace D and M with _D_, _M_ 
> > > > >>> percol.view.STACKLINE = re.sub(r'([DM])', r'_\1_', 
> > > > percol.view.STACKLINE) 
> > > > 'Fold:F1,F2,F3 Push:C-p Pop:_M_-p Script:_M_-s _D_ir:_M_-d 
> > > _D_ircmd:_M_-b' 
> > > > 
> > > > Regards, 
> > > > Roland 
> > > 
> > > I tried with the following, but failed to achieve the expected effect: 
> > > 
> > > class Term: 
> > > HEADER = '\033[95m' 
> > > OKBLUE = '\033[94m' 
> > > OKGREEN = '\033[92m' 
> > > WARNING = '\033[93m' 
> > > FAIL = '\033[91m' 
> > > ENDC = '\033[0m' 
> > > LIGHTCYAN = '\033[1;36m' 
> > > LIGHTGRAY = '\033[0;37m' 
> > > YELLOW = '\033[0;33m' 
> > > BOLD = '\033[1m' 
> > > UNDERLINE = '\033[4m' 
> > > 
> > > [...] 
> > > 
> > > percol.view.STACKLINE = percol.view.STACKLINE.replace('D', Term.UNDERLINE 
> > > + 'D' + Term.ENDC) 
> > > 
> > > The result will look like this: 
> > > 
> > > Fold:F1,F2,F3 Push:C-p Pop:M-p Script:M-s ?[4mD?[0mir:M-d 
> > > ?[4mD?[0mircmd:M-b 
> > > 
> > > I cannot repeat that. Are you sure that the '?' shown in your output are 
> > not due to your terminal settings that influence how strings printed by 
> > Python or inside used terminal are shown? 
> > 
> > Python 3.9.6 (default, Jul 16 2021, 00:00:00) 
> > [GCC 11.1.1 20210531 (Red Hat 11.1.1-3)] on linux 
> > Type "help", "copyright", "credits" or "license" for more information. 
> > >>> UL = '\033[4m' 
> > >>> UL 
> > '\x1b[4m' 
> > >>> ENDC = '\033[0m' 
> > >>> ENDC 
> > '\x1b[0m' 
> > 
> > >>> s = UL + 'D' + ENDC 
> > >>> s 
> > '\x1b[4mD\x1b[0m' 
> > 
> > >>> s = 'ABCDE' 
> > >>> s = s.replace('D', UL + 'D' + ENDC) 
> > >>> s 
> > 'ABC\x1b[4mD\x1b[0mE' 
> > 
> > When I call print(s) it even shows ABCD and D is underscored.
> If I test the code snippet above with ipython/ptpython/python, I got the same result as you described. But the problem I reported here is triggered by running the command line wrapper of the project by `Ctrl-r`, which is worked with curses library. And I also noticed the following file [1] used by the project, which may be pertinent to the problem discussed here. 
> But till now I still can't think of a solution. 
> 
> [1] https://github.com/hongyi-zhao/ariadne/blob/master/percol/ansi.py

And refer to the following file used in the project:

https://github.com/hongyi-zhao/ariadne/blob/master/percol/display.py

Regards,
HY