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docs: Add $ to the escape sequences section

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feat: Add the `$` character to the escape sequences table.
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Yonas Habteab 2024-10-21 12:35:09 +02:00 committed by Alexander A. Klimov
parent b43e5e1620
commit ac220ba651
1 changed files with 5 additions and 0 deletions
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doc/17-language-reference.md
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@ -97,6 +97,7 @@ Character | Escape sequence
--------------------------|------------------------------------ --------------------------|------------------------------------
" | \\" " | \\"
\\ | \\\\ \\ | \\\\
$ | $$
<TAB> | \\t <TAB> | \\t
<CARRIAGE-RETURN> | \\r <CARRIAGE-RETURN> | \\r
<LINE-FEED> | \\n <LINE-FEED> | \\n
@ -107,6 +108,10 @@ In addition to these pre-defined escape sequences you can specify
arbitrary ASCII characters using the backslash character (\\) followed arbitrary ASCII characters using the backslash character (\\) followed
by an ASCII character in octal encoding. by an ASCII character in octal encoding.
In Icinga 2, the `$` character is reserved for resolving [runtime macros](03-monitoring-basics.md#runtime-macros).
However, in situations where a string that isn't intended to be used as a runtime macro contains the `$` character,
it is necessary to escape it with another `$` character.
### Multi-line String Literals <a id="multiline-string-literals"></a> ### Multi-line String Literals <a id="multiline-string-literals"></a>
Strings spanning multiple lines can be specified by enclosing them in Strings spanning multiple lines can be specified by enclosing them in