A .cshrc that chainloads to /bin/bash unless csh is explicitly needed

.cshrc

#!/bin/csh
# Override default login C shell to use bash, unless we explicitly call
# the shell. This allows it to be used if truly desired.
if ($SHELL != "/bin/bash") then
	if ($?prompt) then
		setenv SHELL /bin/bash
		exec $SHELL
	endif
	exit
endif

# Uncomment the following lines to set your text editor.
# If you see warnings in your tools about it not being set,
# then use the following lines to correct the issue.
#setenv VISUAL 'gedit'
#setenv EDITOR 'vi'
#setenv EDITOR 'nano'

# For a more general explanation of the EDITOR and VISUAL variables,
# as well as other good Linux information refer to the Arch-Linux wiki
# article on the topic:
#      > https://wiki.archlinux.org/index.php/Environment_variables
# Or view the linux manpage on the topic by running:
#      > man enviorn