Problem: Since cygwin-3.1.0-0.7 (test) and now with cygwin-3.1.0-1, in mintty (mintty-3.1.0-1), text in bold typeface disappears after certain commands are executed.
I have seen the problem under Windows 10 1903 and Windows 10 1903
Insider Previews, on x86_64 VMware virtual machines.
It does not happen under Windows 8.1 . I do not know about Windows 10
1809; if it's really, really important I may be able to find out.
It does not happen if I revert to cygwin-3.0.7 .
To reproduce:
First, some preparation, for simplicity:
Ensure that /etc/{bash.bashrc,profile} are the same as in
/etc/defaults/etc/; also anything relevant in /etc/profile.d/ .
Start mintty with an empty home directory (to eliminate any .bashrc,
etc.)
Set mintty background to pure white, foreground to pure black.
The default TERM should be "xterm"; also happens with "xterm-color"
and "xterm-256color".
Set PS1='$ ',just to eliminate anything fancy it might output.
Then execute:
echo -e "\e[1mBOLD\e[m"
cygcheck --version | cat
or:
/C/windows/system32/chkdsk.exe C: | cat
That causes the bold "BOLD" to disappear (replaced by whitespace).
(Also, bold blue (\e[1;34m) reverts to non-bold blue.)
The pipe is necessary to produce the bug; piping into 'head' does so
also. But 'date | cat' does not cause the problem. (Note: Those
executables feeding the pipe that produce the problem do not use
the Cygwin dll. I have not yet explored this.)
All Cygwin packages are up to date as of x86_64/setup.ini with
setup-timestamp 1576533033 .
In particular:
terminfo-6.1-1.20190727
ncurses-6.1-1.20190727
libncursesw10-6.1-1.20190727
Attachment: File cygcheck.out, from 'cygcheck -s -v -r'
-- Bruce Jerrick
cygcheck.out
Description: chemical/gulp
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