Configuring IntelliJ's terminal to run Cygwin

.bashrc

# Add to your .bashrc so the terminal starts in the project directory
if [[ ${INTELLIJ} == "true" ]]; then
  cd ${OLDPWD}
fi

# Note that this works in IntelliJ 14, but not in 16.
# Change the shell path in IntelliJ's Tools > Terminal to:
# C:\cygwin64\bin\env INTELLIJ=true TERM=cygwin C:\cygwin64\bin\bash.exe --login -i

run_bash.bat

@echo off
set INTELLIJ=true
set TERM=vt100
set PATH="C:\cygwin64\bin";%PATH%

bash --login -i

REM This works in IntelliJ 16
REM Change the shell path in IntelliJ's Tools > Terminal to:
REM C:\path\to\this\script\run_bash.bat

This worked for me in Intellij IDEA 2024:

C:\cygwin64\bin\bash -ilc 'cd -; exec bash'

The reply above me hung indefinitely.