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Fix readme to use [[ per readme (#126)

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To be consistent with
https://github.com/kvz/bash3boilerplate/edit/master/README.md#Scoping
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Ross Smith II 2019-12-09 00:22:33 -08:00 committed by Kevin van Zonneveld
parent 599faf3830
commit 14dc823cca
1 changed files with 2 additions and 2 deletions
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README.md
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@ -98,7 +98,7 @@ As of `v1.0.3`, b3bp offers some nice re-usable libraries in `./src`. In order t
It is nice to have a Bash package that can not only be used in the terminal, but also invoked as a command line function. In order to achieve this, the exporting of your functionality *should* follow this pattern:
```bash
if [ "${BASH_SOURCE[0]}" != "${0}" ]; then
if [[ "${BASH_SOURCE[0]}" != "${0}" ]]; then
export -f my_script
else
my_script "${@}"
@ -138,7 +138,7 @@ $ my_script some more args --blah
1. Use `set`, rather than relying on a shebang like `#!/usr/bin/env bash -e`, since that is neutralized when someone runs your script as `bash yourscript.sh`.
1. Use `#!/usr/bin/env bash`, as it is more portable than `#!/bin/bash`.
1. Use `${BASH_SOURCE[0]}` if you refer to current file, even if it is sourced by a parent script. In other cases, use `${0}`.
1. Use `:-` if you want to test variables that could be undeclared. For instance, with `if [ "${NAME:-}" = "Kevin" ]`, `$NAME` will evaluate to `Kevin` if the variable is empty. The variable itself will remain unchanged. The syntax to assign a default value is `${NAME:=Kevin}`.
1. Use `:-` if you want to test variables that could be undeclared. For instance, with `if [[ "${NAME:-}" = "Kevin" ]]`, `$NAME` will evaluate to `Kevin` if the variable is empty. The variable itself will remain unchanged. The syntax to assign a default value is `${NAME:=Kevin}`.
## Who uses b3bp?