CVS commit: src/external/bsd/nvi/dist

["Rin Okuyama" <rin%netbsd.org@localhost>]

Module Name:    src
Committed By:   rin
Date:           Sun Jun  3 08:08:37 UTC 2018

Modified Files:
        src/external/bsd/nvi/dist/common: conv.h
        src/external/bsd/nvi/dist/vi: vs_line.c vs_relative.c

Log Message:
Make sure that every wide char occupies at least one display width:
  - Replace non-printable multibyte char with ?-symbol.
  - Put space before non-spacing char.

Fix problems reported in PR bin/53164 and
PR bin/53323, that are because we did not take into account non-printable
multibyte char of wctob(wc) == EOF && wcwidth(wc) == -1.


To generate a diff of this commit:
cvs rdiff -u -r1.2 -r1.3 src/external/bsd/nvi/dist/common/conv.h
cvs rdiff -u -r1.4 -r1.5 src/external/bsd/nvi/dist/vi/vs_line.c \
    src/external/bsd/nvi/dist/vi/vs_relative.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.