Ned Deily added the comment:
As Terry requested, here are a few comments on running
linenumber-text-widget-v1.diff on OS X. Overall, this looks to me to be a
useful option.
1. Having line numbering enabled by default was a bit of a surprise,
particularly in light of 2.
2. The "Toggle Linenumbering" menu item should be in the Options menu cascade,
not the Window(s) one. I believe Options is where other extensions add their
menu items. Initially, I could see no way to disable line numbering without
knowing how to create, if necessary, and edit ~/.idlerc/config-extensions.cfg,
which presumable few users do. Only later did I stumble across the "Toggle
Linenumbering" menu option in the Window menu cascade. As an OS X user, I
would never have thought to look there; normally on OS X, that menu cascade is
limited to options related to selecting windows or tabs and selected options
related to them, like Zoom or Minimize. (Presumably, the edit extensions
preferences feature will help provide another, standard way for the user to
deal with this in the long run.)
3. I found the default color values made the line numbers difficult to read.
Perhaps a better default would be fgcolor=White instead of Black when
bgcolor=Gray?
4. The extension fails to load with Tk 8.4.x:
_tkinter.TclError: unknown option "-inactiveselectbackground"
It appears that option is new in Tk 8.5:
http://www.tcl.tk/man/tcl8.4/TkCmd/text.htm
http://www.tcl.tk/man/tcl8.5/TkCmd/text.htm#M-inactiveselectbackground
I'm not sure what to recommend here. Eventually, 8.4.x usage will slowly fade
away so demanding that IDLE, especially extensions, not depend on any post-8.4
features may be a too-restrictive constraint. Perhaps it is OK to just test
for pre-8.5 at extension initialization and cleanly skip if Tk is too old.
5. The LineNumber extension should be added to the list of default extensions
in the IDLE Help file (Lib/idlelib/help.txt) and the IDLE section of the
Library Reference (Doc/library/idle.rst). Also add the "Toggle Linenumbering"
menu item.
6. The LineNumber extension config-extensions.def options need to be documented
for the user (this is a generic issue for IDLE extensions). For example, I
would not have had any clue that it was possible to enable line numbers for the
shell window without examining the file and noticing the "enable_shell=0" hint.
(Noted in passing: while the help/doc suggests: "See the beginning of
config-extensions.def in the idlelib directory for further information.", even
in the unlikely event that a user knew in what directory to look for it, it's
not possible to open that file in an IDLE editor window with the current
default Cocoa Tk's since Cocoa Tk does not provide a filter option on the open
window; only .py* and .txt files can be opened.)
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<http://bugs.python.org/issue17535>
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