Updated fbopt to version 0.2.

_posts/2018-11-18-my-bash-option-parsing-template.md

@@ -52,23 +52,30 @@ These elements should be common sense and not be specific to `fbopt`
 
 ## Dependencies and compliancy
 
-### fbopt version 0.1
-
 The template is known to work with the following packages
 
-| Package | Version | Version command |
-|---------|---------|-----------------|
-| [GNU Bash](http://www.gnu.org/software/bash/bash.html) | `GNU bash, version 4.4.23(1)-release (x86_64-unknown-linux-gnu)` | `$ bash --version` |
-| [getopt](https://www.kernel.org/pub/linux/utils/util-linux/) | `getopt from util-linux 2.33`  | `$ getopt -V` |
+| Package | Version command |
+|---------|-----------------|
+| [GNU Bash](http://www.gnu.org/software/bash/bash.html) | `$ bash --version` |
+| [getopt](https://www.kernel.org/pub/linux/utils/util-linux/) | `$ getopt --version` |
+
+`fbopt` compatibility:
+
+| Package | Package version | fbopt version |
+|---------|-----------------|---------------|
+| GNU Bash | `GNU bash, version 4.4.23(1)-release (x86_64-unknown-linux-gnu)` | `0.1`, `0.2` |
+| getopt | `getopt from util-linux 2.33` | `0.1`, `0.2` |
 
 ## The template
 
 To allow inclusion in any project the template is released under the [CC0 1.0 license](https://creativecommons.org/publicdomain/zero/1.0/legalcode.txt).
 
+What follows is `fbopt` version `0.2`.
+
 ```shell
 #!/bin/bash
 #
-# fbopt version 0.1
+# fbopt version 0.2
 #
 # Written in 2018 by Franco Masotti/frnmst <franco.masotti@student.unife.it>
 #
@@ -99,7 +106,8 @@ Options:
     -f                          enable and or set f
                                 with an optional argument
     -h, --help                  print this help
-    --print-flags               print the enabled options
+    --print-flags               print the enabled options. This can also
+                                be used to print the default options
 
 Exit status:
  0  if OK,
@@ -138,7 +146,7 @@ main()
 
     # Set the options. flag_f has an optional argument.
     local getopt_short_options='a:b:c:def::hi'
-    local getopt_long_options="flag-a:,flag-b:,flag-e,print-flags,help,"
+    local getopt_long_options='flag-a:,flag-b:,flag-e,print-flags,help,'
 
     # Set the default values for the flags.
     local flag_a=''
@@ -147,7 +155,6 @@ main()
     local flag_d='false'
     local flag_e='false'
     local flag_f='no'
-    local print_flags='false'
 
     local program_name="${0}"
     opts="$(getopt \
@@ -197,6 +204,14 @@ main()
     # Everything else after '--' is an argument.
     argc="${*}"
 
+    # Check that the flags that must be non empty are actually not empty.
+    # A user might infact circumvent getopt's mechanisms like this
+    # ./program -flag ''
+    # This can also be done inside the option parser loop but to avoid nestings
+    # I prefer it done here.
+    { [ -z "${flag_a}" ] \
+        || [ -z "${flag_b}" ]; } \
+        && getopt_error && return 1
     [ "${print_flags}" = 'true' ] \
         && show_flags \
             'flag_a' \
@@ -207,14 +222,6 @@ main()
             'flag_f' \
         && return 0
     [ "${help}" = 'true' ] && show_help && return 0
-    # Check that the flags that must be non empty are actually not empty.
-    # A user might infact circumvent getopt's mechanisms like this
-    # ./program -flag ''
-    # This can also be done inside the option parser loop but to avoid nestings
-    # I prefer it done here.
-    { [ -z "${flag_a}" ] \
-        || [ -z "${flag_b}" ]; } \
-        && getopt_error && return 1
 
     # From now on you should call a function or an external program
     # using the values of the flag variables.