Manual: grepc_c

grepc_c(1)				   General Commands Manual				  grepc_c(1)

NAME
       grepc_c - print PCRE patterns for searching C code

SYNOPSIS
       grepc_c [option ...] pattern

DESCRIPTION
       grepc_c(1)  is  a  driver for grepc(1).	It prints PCRE patterns that grepc(1) will use to search for
       declarations, definitions, and/or uses of pattern in C source code.

       pattern is a PCRE pattern.  It normally represents a C identifier, and word boundaries are implicitly
       added to it in most cases.

   Types of code
       This program can produce PCRE pattern for several types of code.	  The  following  arguments  can  be
       passed to the -t option to select the types of code that will be searched.

       e      enum constant definitions.

       f      Function prototypes and definitions.  This can be further subdivided into:

	      fp     Function prototypes.

	      fd     Function definitions.

	      fl     Linux kernel system calls.	 This can be further subdivided into:

		     flp    Linux kernel system call prototypes.

		     fld    Linux kernel system call definitions.

	      fg     glibc internal names of libc functions.  This can be further subdivided into:

		     fgp    glibc prototypes.

		     fgd    glibc definitions.

       m      Macro definitions.

	      mf     Function-like macro definitions.

	      mo     Other macro definitions.

       t      Type definitions.

       u      Uses.   Searches	occurences of pattern within enums, function bodies, macro replacements, and
	      type definitions, and prints the whole enum, function, macro,  and/or  type  definitions.	  In
	      this  case there are no word boundaries set by default, so if pattern is open, fopen will also
	      be found; that's to allow searching for patterns containing any sequence of characters.

	      This can be further subdivided into:

	      ue     Uses within enum definitions (except as an enum constant).

	      uf     Uses within function definition bodies.

	      um     Uses within macro replacements.

	      ut     Uses within type definitions (except enum; that is: typedef, struct, or union).

OPTIONS
       -t type
	      Restrict the search to a specific type of code (see Types of code	 under	DESCRIPTION).	This
	      option can be passed multiple times to search for various types of code.	Default: e f m t.

EXAMPLES
       alx@devuan:~$ grepc_c -tm alignof;
       (?s)^[ \t]*#\s*define\s[\s\\]*alignof\(.*?[^\\]$
       (?s)^[ \t]*#\s*define\s[\s\\]*alignof\b(?!\().*?(?grepc(1), pcre2grep(1), pcre2syntax(3), pcre2pattern(3)

Linux man-pages 6.17				 2026-01-06					  grepc_c(1)