Gettext/Quote 002dlike-Expressions

15.5.21.4 What are Strings And Quote-like Expressions?

Perl offers a plethora of different string constructs. Those that can be used either as arguments to functions or inside braces for hash lookups are generally supported by xgettext.

double-quoted strings
```
print gettext "Hello World!";
```
single-quoted strings
```
print gettext 'Hello World!';
```
the operator qq
```
print gettext qq |Hello World!|;
print gettext qq <E-mail: <guido\@imperia.net>>;
```
The operator qq is fully supported. You can use arbitrary delimiters, including the four bracketing delimiters (round, angle, square, curly) that nest.
the operator q
```
print gettext q |Hello World!|;
print gettext q <E-mail: <[email protected]>>;
```
The operator q is fully supported. You can use arbitrary delimiters, including the four bracketing delimiters (round, angle, square, curly) that nest.
the operator qx
```
print gettext qx ;LANGUAGE=C /bin/date;
print gettext qx [/usr/bin/ls | grep '^[A-Z]*'];
```
The operator qx is fully supported. You can use arbitrary delimiters, including the four bracketing delimiters (round, angle, square, curly) that nest.

The example is actually a useless use of gettext. It will invoke the gettext function on the output of the command specified with the qx operator. The feature was included in order to make the interface consistent (the parser will extract all strings and quote-like expressions).
here documents
```
print gettext <<'EOF';
program not found in $PATH
EOF

print ngettext <<EOF, <<"EOF";
one file deleted
EOF
several files deleted
EOF
```
Here-documents are recognized. If the delimiter is enclosed in single quotes, the string is not interpolated. If it is enclosed in double quotes or has no quotes at all, the string is interpolated.

Delimiters that start with a digit are not supported!