editor: add option to show EOL

[jengelh]

This is my EOL patch forward-ported from ​http://midnight-commander.org/ticket/113

The following changes since commit 78019b896ba0e59ba886ecf500747cbe77dbc7cb:

Merge branch '2520_ctrlg_closes_panels' (2011-03-30 16:18:45 +0400)

are available in the git repository at:

​git://dev.medozas.de/mc 2525_highlight_eol

Jan Engelhardt (1):

editor: add option to show EOL

src/editor/edit.h | 1 +
src/editor/editdraw.c | 8 +++++++-
src/editor/editoptions.c | 24 +++++++++++++-----------
src/setup.c | 1 +
4 files changed, 22 insertions(+), 12 deletions(-)

[angel_il]

2 Jan:
please attach patches made as follow:

 $ git format-patch HEAD^ (if need upload 1 current commit)
 $ git format-patch HEAD~3 (if need upload 3 commits)
 $ git format-patch origin/master(if need upload all commits from 'master')

and thank you for the patches

[andrew_b]

Patch should be updated to have a nice look'n'feel in non-unicode locales. Hardcoded 0xB6 symbol is not a good way, it should be defined in skins.

[mooffie]

Editors like Mined[1] and Geresh[2] show different indicators for different types of EOLs (see screenshots).

They also indicate the very last line, if it's missing its EOL, with yet another distinguishing indicator (they happen to use the "not" character). This alone is a useful feature.

[1] ​http://towo.net/mined/screenshots.html
[2] ​http://www.typo.co.il/~mooffie/geresh/sshot02.png