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prezto/helper.zsh

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2012-01-31 23:37:51 -05:00
#
# Defines helper functions.
#
# Authors:
# Sorin Ionescu <sorin.ionescu@gmail.com>
#
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# Checks boolean variable for "true".
# Case insensitive: "1", "y", "yes", "t", "true", "o", and "on".
function is-true {
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[[ -n "$1" && "$1" == (1|[Yy]([Ee][Ss]|)|[Tt]([Rr][Uu][Ee]|)|[Oo]([Nn]|)) ]]
}
# Prints the first non-empty string in the arguments array.
function coalesce {
for arg in $argv; do
print "$arg"
return 0
done
return 1
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}
# Checks if a file can be autoloaded by trying to load it in a subshell.
function autoloadable {
( unfunction $1 ; autoload -U +X $1 ) &> /dev/null
}
# Loads Oh My Zsh modules.
function omodload {
local omodule
# Extended globbing is needed for autoloading of module functions.
setopt EXTENDED_GLOB
# Add functions and completions to fpath.
fpath=(${argv:+${OMZ}/modules/${^argv}/{functions,completions}(/FN)} $fpath)
# Load Oh My Zsh functions.
for ofunction in $OMZ/modules/**/functions/^([_.]*|prompt_*_setup)(.N:t); do
autoload -Uz "$ofunction"
done
unset ofunction
# Extended globbing is no longer needed.
unsetopt EXTENDED_GLOB
for omodule in "$argv[@]"; do
if zstyle -t ":omz:module:$omodule" loaded; then
continue
elif [[ ! -d "$OMZ/modules/$omodule" ]]; then
print "$0: no such module: $omodule" >&2
continue
else
if [[ -f "$OMZ/modules/$omodule/init.zsh" ]]; then
source "$OMZ/modules/$omodule/init.zsh"
fi
if (( $? == 0 )); then
zstyle ":omz:module:$omodule" loaded 'yes'
else
zstyle ":omz:module:$omodule" loaded 'no'
fi
fi
done
}