[konsole] [Bug 431898] New: underline files doesn't work well for grep result

[Piotr Mierzwinski]

https://bugs.kde.org/show_bug.cgi?id=431898

            Bug ID: 431898
           Summary: underline files doesn't work well for grep result
           Product: konsole
           Version: 20.12.1
          Platform: Archlinux Packages
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: konsole-devel at kde.org
          Reporter: piotr.mierzwinski at gmail.com
  Target Milestone: ---

Created attachment 135042
  --> https://bugs.kde.org/attachment.cgi?id=135042&action=edit
konsole - bash_profile - mouse

SUMMARY
"Underline files" works well for result of ls command, but if we use grep -n
command that bottom part of listed names are not underline after mouse over any
of such.
To get this result need to grep file present in current directory which has
dozen of matching lines. Requirement is that column with matching lines took up
the full height of the window.
I observed that on top only couple (5) of names are underlined and on bottom
only last 2 or 3 are underlined. Example of result I attached on screenshot.
I assumed that each name should be underlined in vertical column.

STEPS TO REPRODUCE
1. Define and open bash profile
2. In configuration for bash profile check following options:
Path: "Settings -> Edit current profile -> Mouse -> Miscellaneous":
"Underline files", "Underline links"
3. run for example "grep -n qt *" in directory where is present file which you
want to search
4. in result you should get long list - dozen of positions with matching lines
in one searched file, where file name doesn't start with path. 
5. move mouse vertically over file name from top to bottom and in opposite

OBSERVED RESULT
on top of list only couple first names are underlined after mouse over each and
couple on bottom

EXPECTED RESULT
each of name should be underlined after over mouse on it

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: YES
(available in About System)
KDE Plasma Version: 5.20.5
KDE Frameworks Version: 5.78.0
Qt Version: 5.15.2

ADDITIONAL INFORMATION
$ grep --version
grep (GNU grep) 3.6

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