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Add helper to get the value of an alias only

This commit is contained in:
mapc 2012-05-05 10:39:05 +02:00
parent 1120f97305
commit dbef8b1a92

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@ -15,3 +15,33 @@ function take() {
cd $1
}
#
# Get the value of an alias.
#
# Arguments:
# 1. alias - The alias to get its value from
# STDOUT:
# The value of alias $1 (if it has one).
# Return value:
# 0 if the alias was found,
# 1 if it does not exist
#
function alias_value() {
alias "$1" | sed "s/^$1='\(.*\)'$/\1/"
test $(alias "$1")
}
#
# Try to get the value of an alias,
# otherwise return the input.
#
# Arguments:
# 1. alias - The alias to get its value from
# STDOUT:
# The value of alias $1, or $1 if there is no alias $1.
# Return value:
# Always 0
#
function try_alias_value() {
alias_value "$1" || echo "$1"
}