Change the display style of the text on the STACKLINE.

[hongy...@gmail.com]

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

> But copying 
> the output to mail looses the underscore ... 
> [image: image.png] 
> 
> BR, 
> Roland
> > Regards, 
> > HY 
> > 
> > 
> 
> 
> 
> 
> > > > How to achieve this purpose? 
> > > > 
> > > > [1] 
> > > > 
> > https://github.com/hongyi-zhao/ariadne/blob/838179bb4275ac85f5342d9e7d086d6ade3be1de/rc.py#L55 
> > > > 
> > > > Regards, 
> > > > HY 
> > > > -- 
> > > > https://mail.python.org/mailman/listinfo/python-list 
> > > >
> > -- 
> > https://mail.python.org/mailman/listinfo/python-list 
> >