Tk Source Code

Regression from the original text widget.

text configure -wrap char (probably -wrap word also)

tests: textDisp-24.8, textDisp-24.9, et.al.

revised_text:
  When there is not enough room, a wrapped line with a space at the end always
  displays the space on the next line.
  "a b c" (wrap)
  " d e f"

8.6.6:
  When there is not enough room, a wrapped line with a space at the end does
  not display the space.
  "a b c " (wrap, the space is hidden)
  "d e f"

An improvement could be made:

When there are zero pixels available, both versions move the space to the next
line.  In this case, the space does not need to be displayed.
Have:
  "a b c"  (zero pixels available for next character)
  " d e f" (current display)
Want:
  "a b c " (space is hidden)
  "d e f"

I will duplicate and adjust the tests to use the 'spacemode' option.
I knew there was a ticket you worked on for this, could not find it.

Hmmm....if the 'text' widget is set readonly (e.g. for displaying text), I would want spacemode to automatically turn on.

This is intentional, the author of the revised implementation disagreed with what I did in the legacy code:

http://scidb.sourceforge.net/tk/trim-spaces.html

Personally I have no strong opinion on which approach is The Right Thing.