Configuration Information [Automatically generated, do not change]: Machine: x86_64 OS: cygwin Compiler: gcc Compilation CFLAGS: -DPROGRAM='bash.exe' -DCONF_HOSTTYPE='x86_64' -DCONF_OSTYPE='cygwin' -DCONF_MACHTYPE='x86_64-unknown-cygwin' -DCONF_VENDOR='unknown' -DLOCALEDIR='/usr/share/locale' -DPACKAGE='bash' -DSHELL -DHAVE_CONFIG_H -DRECYCLES_PIDS -I. -I/usr/src/bash-4.3.39-2.x86_64/src/bash-4.3 -I/usr/src/bash-4.3.39-2.x86_64/src/bash-4.3/include -I/usr/src/bash-4.3.39-2.x86_64/src/bash-4.3/lib -DWORDEXP_OPTION -ggdb -O2 -pipe -Wimplicit-function-declaration -fdebug-prefix-map=/usr/src/bash-4.3.39-2.x86_64/build=/usr/src/debug/bash-4.3.39-2 -fdebug-prefix-map=/usr/src/bash-4.3.39-2.x86_64/src/bash-4.3=/usr/src/debug/bash-4.3.39-2 uname output: CYGWIN_NT-6.1 COR900GFY5 2.2.0(0.289/5/3) 2015-08-03 12:51 x86_64 Cygwin Machine Type: x86_64-unknown-cygwin
Bash Version: 4.3 Patch Level: 39 Release Status: release Description: Pressing CTRL-U after entering data in response to a read -ep prompt should work as does the PS1 bash prompt. Consider a custom PS1 bash prompt containing ansi escape sequences, for example, to display the prompt in color. To get proper CTRL-U clearing of input typed at the prompt, bash recognizes special \ [ and \ ] delimiters in the prompt string. Here is my PS1, for example: \ [ ESC [ 3 2 m \ ] $ SP \ [ ESC ( B ESC [ m \ ] LF which displays a "$ " prompt in green. Without \ [ and \ ] in the prompt, CTRL-U doesn't clear the line properly, so it's a necessary feature. read -ep prompt, however, does not support the \ [ and \ ] delimiters. Consequently, for prompts containing ansi escape sequences, CTRL-U doesn't clear the line properly. Repeat-By: The following example demonstrates the problem. $ prompt="$(tput setaf 2)test>$(tput sgr0) " $ read -ep "$prompt" answer test> xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx<CTRL-U> Note that all the x's are not cleared.
