PCRE2\_SET\_NEWLINE(3) Library Functions Manual PCRE2\_SET\_NEWLINE(3)

# [NAME](#NAME)

PCRE2 - Perl-compatible regular expressions (revised API)

# [SYNOPSIS](#SYNOPSIS)

**#include <pcre2.h>**

```
int pcre2_set_max_varlookbehind(pcre2_compile_context *ccontext,
  uint32_t value);
```

# [DESCRIPTION](#DESCRIPTION)

This sets a maximum length for the number of characters matched by a variable-length lookbehind assertion. The default is set when PCRE2 is built, with the ultimate default being 255, the same as Perl. Lookbehind assertions without a bounding length are not supported. The result is always zero.

There is a complete description of the PCRE2 native API in the **pcre2api** page and a description of the POSIX API in the **pcre2posix** page.

11 August 2023 PCRE2 10.49

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Document: pcre2_set_max_varlookbehind(3) from pcre2 10.49-r1 (Chainguard OS)
Source: https://github.com/PCRE2Project/pcre2.git