This is m4.info, produced by makeinfo version 7.3 from m4.texi.

This manual (10 July 2026) is for GNU M4 (version 1.4.21), a package
containing an implementation of the m4 macro language.

   Copyright © 1989-1994, 2004-2014, 2016-2017, 2020-2026 Free Software
Foundation, Inc.

     Permission is granted to copy, distribute and/or modify this
     document under the terms of the GNU Free Documentation License,
     Version 1.3 or any later version published by the Free Software
     Foundation; with no Invariant Sections, no Front-Cover Texts, and
     no Back-Cover Texts.  A copy of the license is included in the
     section entitled "GNU Free Documentation License."
INFO-DIR-SECTION Text creation and manipulation
START-INFO-DIR-ENTRY
* M4: (m4).                     A powerful macro processor.
END-INFO-DIR-ENTRY


Indirect:
m4.info-1: 829
m4.info-2: 317298

Tag Table:
(Indirect)
Node: Top829
Node: Preliminaries9772
Node: Intro10478
Node: History12169
Node: Bugs16222
Node: Manual17485
Node: Invoking m420988
Node: Operation modes23192
Node: Preprocessor features26291
Node: Limits control29461
Node: Frozen state33472
Node: Debugging options34311
Node: Command line files36363
Node: Syntax38014
Node: Names39169
Node: Quoted strings39651
Node: Comments40318
Node: Other tokens41221
Node: Input processing41815
Ref: Input processing-Footnote-150252
Node: Macros50449
Node: Invocation50943
Node: Inhibiting Invocation51744
Node: Macro Arguments55986
Node: Quoting Arguments59106
Node: Macro expansion61242
Node: Definitions61960
Node: Define62745
Node: Arguments65263
Node: Pseudo Arguments69029
Node: Undefine72658
Node: Defn73817
Node: Pushdef78880
Node: Indir81620
Node: Builtin83787
Node: Conditionals86062
Node: Ifdef87008
Node: Ifelse87890
Node: Shift91276
Node: Forloop102096
Node: Foreach104777
Node: Stacks110399
Node: Composition113534
Node: Debugging121211
Node: Dumpdef121804
Node: Trace123222
Node: Debug Levels126874
Node: Debug Output131744
Node: Input Control133057
Node: Dnl133598
Node: Changequote135540
Node: Changecom145272
Node: Changeword149158
Node: M4wrap154763
Node: File Inclusion158848
Node: Include159169
Node: Search Path161986
Node: Diversions162935
Node: Divert164642
Node: Undivert167208
Node: Divnum170593
Node: Cleardivert171066
Node: Text handling172287
Node: Len173014
Node: Index macro173408
Node: Regexp174301
Node: Substr177462
Node: Translit178520
Node: Patsubst181311
Node: Format185952
Node: Arithmetic189360
Node: Incr189813
Node: Eval191488
Node: Shell commands200232
Node: Platform macros201170
Node: Syscmd203372
Node: Esyscmd205747
Node: Sysval207330
Node: Mkstemp209297
Node: Miscellaneous213354
Node: Errprint213791
Node: Location215043
Node: M4exit217920
Node: Frozen files220046
Node: Using frozen files220844
Node: Frozen file format224225
Node: Compatibility227375
Node: Extensions228457
Node: Incompatibilities232511
Node: Other Incompatibilities241815
Node: Answers244545
Node: Improved exch245359
Node: Improved forloop245912
Node: Improved foreach251368
Node: Improved copy264746
Node: Improved m4wrap268803
Node: Improved cleardivert271299
Node: Improved capitalize272297
Node: Improved fatal_error277333
Node: Copying This Package278430
Node: GNU General Public License278909
Node: Copying This Manual317298
Node: GNU Free Documentation License317822
Node: Indices342946
Node: Macro index343230
Node: Concept index349840

End Tag Table


Local Variables:
coding: utf-8
End: