man page with colors

[arkhan]

Hello great job, I have this issue when man pages contains colors

PAGER=less man argv 

PAGER=eless man argv 

Thanks

[kaushalmodi]

What is your OS?

I am on GNU/Linux type system: RHEL 6.8 and the same man page show up fine in eless too:

[kaushalmodi]

Your screenshot looks similar to the one in an earlier issue: #27.

Based off the long debug in that thread, this was the solution: https://eless.scripter.co/#example-eless-config-in-bash [don't set PAGER to eless for man pages on OSX (I am assuming you have that OS)].

[arkhan]

Hello @kaushalmodi, I am using archlinux and emacs 27

[kaushalmodi]

hmm.. even then, does PAGER=less man -P eless argv work for you (instead of PAGER=eless man argv)?

[kaushalmodi]

If that doesn't help, then please provide debug info using the -D switch as explained here: https://eless.scripter.co/#how-to-help-debug.

[arkhan]

PAGER=less man -P eless argv

No, I get the same result

[arkhan]

If that doesn't help, then please provide debug info using the -D switch as explained here: https://eless.scripter.co/#how-to-help-debug.

I have this:

[kaushalmodi]

I am seeing the same value of first_line_piped_data ..

km²~/temp/:> (setenv PAGER "eless -D"; man argv)                                                                                                                                             07/30 11:18pm
Eless Version v0.5
https://github.com/kaushalmodi/eless/tree/v0.5
DEBUG: Piped data file : /tmp/emacs-stdin-kmodi.p5p8VwX
DEBUG: --> Input from pipe/file
DEBUG:     Output to terminal -->
DEBUG: var : -D
DEBUG: Raw Args                       : -D
DEBUG: Emacs Args                     : -nw
DEBUG: Pipe Contents (up to 10 lines) : tclvars(n)                   Tcl Built-In Commands                  tclvars(n)



_______________________________________________________________________________________________________________________________________________________________________________________

NAME
       argc,  argv,  argv0, auto_path, env, errorCode, errorInfo, tcl_interactive, tcl_library, tcl_nonwordchars, tcl_patchLevel, tcl_pkgPath, tcl_platform, tcl_precision, tcl_rcFile-
       Name, tcl_traceCompile, tcl_traceEval, tcl_wordchars, tcl_version - Variables used by Tcl
_______________________________________________________________________________________________________________________________________________________________________________________
DEBUG: first_line_piped_data = tclvars(n)                   Tcl Built-In Commands                  tclvars(n)
DEBUG: Man Page = tclvars(n)
DEBUG: Eless Command : emacs_Q_view_mode                          -nw                          --eval '(progn
                                   (man "tclvars(n)")
                                   ;; Below workaround is only for emacs 24.5.x and older releases
                                   ;; where the man page takes some time to load.
                                   ;; 1-second delay before killing the *scratch* window
                                   ;; seems to be sufficient
                                   (when (version<= emacs-version "24.5.99")
                                      (sit-for 1))
                                   (delete-window))'
DEBUG: Args passed to emacs_Q_view_mode : -nw --eval (progn
                                   (man "tclvars(n)")
                                   ;; Below workaround is only for emacs 24.5.x and older releases
                                   ;; where the man page takes some time to load.
                                   ;; 1-second delay before killing the *scratch* window
                                   ;; seems to be sufficient
                                   (when (version<= emacs-version "24.5.99")
                                      (sit-for 1))
                                   (delete-window))

.. but you are getting "No man page or info manual detected."

So, let's try this.. what do you get when you run the below bash script (it's an excerpt of what I use in eless to detect if man command is called)?

#!/usr/bin/env bash
perl --version | grep 'perl.*version'

first_line_piped_data="tclvars(n)                   Tcl Built-In Commands                  tclvars(n)"
man_page=$(echo "${first_line_piped_data}" \
               | perl -ne '/^([A-Za-z0-9-_]+\([a-z0-9]+\))(?=\s+.*?\1$)/ and print $1' \
               | perl -pe 's/bash_builtins/builtins/i' \
               | perl -pe 's/xsel\(1x\)/xsel/i' \
               | perl -pe 's/^[A-Z0-9-_()]+$/\L$_/' \
               || true)
echo "Man page = ${man_page}"

The output I get is:

This is perl 5, version 22, subversion 0 (v5.22.0) built for x86_64-linux
Man page = tclvars(n)

[arkhan]

@kaushalmodi, I get this:

This is perl 5, version 30, subversion 0 (v5.30.0) built for x86_64-linux-thread-multi
Man page = tclvars(n)

[kaushalmodi]

@arkhan

To what I said in my previous comment:

I am seeing the same value of first_line_piped_data

I see that your first_line_piped_data is wrapping around.. is that wrapping because of terminal width or does that line actually break with a newline?

[kaushalmodi]

@arkhan Can you share the first 10 lines of your "piped data file" to a gist or ix.io or just paste it here in a code block while preserving all whitespaces and newlines .. the file path following:

DEBUG: Piped data file : ..

[kaushalmodi]

Also can you edit your copy of eless and add the below debug line after these lines:

eless/eless

Lines 553 to 558 in 0065c3b

	man_page=$(echo "${first_line_piped_data}" \
	| perl -ne '/^([A-Za-z0-9-_]+\([a-z0-9]+\))(?=\s+.*?\1$)/ and print $1' \
	| perl -pe 's/bash_builtins/builtins/i' \
	| perl -pe 's/xsel\(1x\)/xsel/i' \
	| perl -pe 's/^[A-Z0-9-_()]+$/\L$_/' \
	|| true)

.. add

debug "man_page = ${man_page}"

Run the same command with -D and this time, please paste the whole text output here between

```
```

instead of pasting the screenshot.

[kaushalmodi]

And finally, can you also paste the output of:

/usr/bin/env bash --version

Mine is:

GNU bash, version 4.1.2(1)-release (x86_64-redhat-linux-gnu)

[kaushalmodi]

I recently added few more debug commands to eless.

So please update your eless version to the HEAD of the master branch, and paste the output of your eless command with the -D switch within triple backquotes in this thread.

[arkhan]

Update eless and now I get this:

Thanks

[kaushalmodi]

1. Does evaluating (man "tclvars(n)") in an emacs -Q work for you [I just tested that and it works for me]? As you see in your screenshot, that's exactly what eless does.
2. Do you want to try PAGER="eless -D" man grep? (and please paste the ascii text from the terminal instead of pasting the image; that would allow me to quickly copy/paste stuff from there if I need).

Also, what changed on your system? Earlier you got "No man page or info man detected", and now you get "Man page = tclvars(n)". There was no change with man page detection in the recent eless update.

[arkhan]

Whit (man "tclvars(n)") get this

But PAGER="eless -D" man grep works

[kaushalmodi]

.. so it looks like you do not have tclvars in your MANPATH? Does a simple man tclvars (without eless) work for you?

If you try to view arbitrary man pages like:

• PAGER="eless -D" man grep
• PAGER="eless -D" man ls
• PAGER="eless -D" man tclvars

and for tclvars, if eless is actually trying to do (man "tclvars(n)") and if that doesn't work, then the problem seems to be outside emacs and eless. What do you think?