Refernce: Version: 2.3.4 (Mac OS)
Why can't there be on option to select ALL text that is in the serial monitor window and then copy it. If you select ALL and select copy, it only copies the rows that were visible in the window? I little bit odd that it is not possible?
This is a known issues and is on the list of annoying things to be fixed but judging by how long the problem has existed don't hold your breath waiting for a fix
See Missing "Select All" capability for Serial Monitor · Issue #812 · arduino/arduino-ide · GitHub
You could always use a different program that supports this. I like the free CoolTerm, although there are many others.
Yes I could, but it does not make sense, cause I have to disconnect COM from Arduino IDE, read the terminal outputs from Coolterm and then go back to IDE.
Using another software is not a solution to BUGs in Arduino IDE. I think it would be better to fix the problem in Arduino IDE itself?
I think one purpose of this forum is to develop Arduino IDE better.
I agree it would be useful to have a Select all and copy feature for the Serial Monitor. However, I understand from comments elsewhere that this is not a simple feature to implement.
What amazes me is that not only is Select All not available but that doing Ctrl+A in the Serial monitor selects the sketch text instead of the Serial monitor text