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Added this LaTeX style file to the package since not all LaTeX installations
have it, especially on non-Unix platforms. (MikTeX in particular does not have it.) This is part of the response to SF patch #429611.
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‎Doc/texinputs/fancyhdr.sty‎

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% fancyhdr.sty version 1.99d
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% Fancy headers and footers for LaTeX.
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% Piet van Oostrum, Dept of Computer Science, University of Utrecht
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% Padualaan 14, P.O. Box 80.089, 3508 TB Utrecht, The Netherlands
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% Telephone: +31 30 2532180. Email: [email protected]
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% ========================================================================
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% LICENCE: This is free software. You are allowed to use and distribute
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% this software in any way you like. You are also allowed to make modified
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% versions of it, but you can distribute a modified version only if you
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% clearly indicate that it is a modified version and the person(s) who
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% modified it. This indication should be in a prominent place, e.g. in the
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% top of the file. If possible a contact address, preferably by email,
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% should be given for these persons. If that is feasible the modifications
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% should be indicated in the source code.
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% ========================================================================
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% MODIFICATION HISTORY:
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% Sep 16, 1994
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% version 1.4: Correction for use with \reversemargin
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% Sep 29, 1994:
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% version 1.5: Added the \iftopfloat, \ifbotfloat and \iffloatpage commands
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% Oct 4, 1994:
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% version 1.6: Reset single spacing in headers/footers for use with
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% setspace.sty or doublespace.sty
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% Oct 4, 1994:
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% version 1.7: changed \let\@mkboth\markboth to
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% \def\@mkboth{\protect\markboth} to make it more robust
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% Dec 5, 1994:
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% version 1.8: corrections for amsbook/amsart: define \@chapapp and (more
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% importantly) use the \chapter/sectionmark definitions from ps@headings if
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% they exist (which should be true for all standard classes).
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% May 31, 1995:
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% version 1.9: The proposed \renewcommand{\headrulewidth}{\iffloatpage...
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% construction in the doc did not work properly with the fancyplain style.
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% June 1, 1995:
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% version 1.91: The definition of \@mkboth wasn't restored on subsequent
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% \pagestyle{fancy}'s.
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% June 1, 1995:
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% version 1.92: The sequence \pagestyle{fancyplain} \pagestyle{plain}
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% \pagestyle{fancy} would erroneously select the plain version.
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% June 1, 1995:
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% version 1.93: \fancypagestyle command added.
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% Dec 11, 1995:
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% version 1.94: suggested by Conrad Hughes <[email protected]>
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% CJCH, Dec 11, 1995: added \footruleskip to allow control over footrule
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% position (old hardcoded value of .3\normalbaselineskip is far too high
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% when used with very small footer fonts).
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% Jan 31, 1996:
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% version 1.95: call \@normalsize in the reset code if that is defined,
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% otherwise \normalsize.
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% this is to solve a problem with ucthesis.cls, as this doesn't
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% define \@currsize. Unfortunately for latex209 calling \normalsize doesn't
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% work as this is optimized to do very little, so there \@normalsize should
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% be called. Hopefully this code works for all versions of LaTeX known to
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% mankind.
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% April 25, 1996:
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% version 1.96: initialize \headwidth to a magic (negative) value to catch
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% most common cases that people change it before calling \pagestyle{fancy}.
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% Note it can't be initialized when reading in this file, because
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% \textwidth could be changed afterwards. This is quite probable.
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% We also switch to \MakeUppercase rather than \uppercase and introduce a
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% \nouppercase command for use in headers. and footers.
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% May 3, 1996:
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% version 1.97: Two changes:
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% 1. Undo the change in version 1.8 (using the pagestyle{headings} defaults
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% for the chapter and section marks. The current version of amsbook and
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% amsart classes don't seem to need them anymore. Moreover the standard
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% latex classes don't use \markboth if twoside isn't selected, and this is
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% confusing as \leftmark doesn't work as expected.
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% 2. include a call to \ps@empty in ps@@fancy. This is to solve a problem
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% in the amsbook and amsart classes, that make global changes to \topskip,
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% which are reset in \ps@empty. Hopefully this doesn't break other things.
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% May 7, 1996:
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% version 1.98:
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% Added % after the line \def\nouppercase
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% May 7, 1996:
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% version 1.99: This is the alpha version of fancyhdr 2.0
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% Introduced the new commands \fancyhead, \fancyfoot, and \fancyhf.
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% Changed \headrulewidth, \footrulewidth, \footruleskip to
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% macros rather than length parameters, In this way they can be
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% conditionalized and they don't consume length registers. There is no need
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% to have them as length registers unless you want to do calculations with
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% them, which is unlikely. Note that this may make some uses of them
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% incompatible (i.e. if you have a file that uses \setlength or \xxxx=)
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% May 10, 1996:
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% version 1.99a:
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% Added a few more % signs
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% May 10, 1996:
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% version 1.99b:
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% Changed the syntax of \f@nfor to be resistent to catcode changes of :=
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% Removed the [1] from the defs of \lhead etc. because the parameter is
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% consumed by the \@[xy]lhead etc. macros.
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% June 24, 1997:
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% version 1.99c:
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% corrected \nouppercase to also include the protected form of \MakeUppercase
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% \global added to manipulation of \headwidth.
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% \iffootnote command added.
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% Some comments added about \@fancyhead and \@fancyfoot.
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% Aug 24, 1998
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% version 1.99d
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% Changed the default \ps@empty to \ps@@empty in order to allow
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% \fancypagestyle{empty} redefinition.
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\let\fancy@def\gdef
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\def\if@mpty#1#2#3{\def\temp@ty{#1}\ifx\@empty\temp@ty #2\else#3\fi}
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% Usage: \@forc \var{charstring}{command to be executed for each char}
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% This is similar to LaTeX's \@tfor, but expands the charstring.
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\def\@forc#1#2#3{\expandafter\f@rc\expandafter#1\expandafter{#2}{#3}}
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\def\f@rc#1#2#3{\def\temp@ty{#2}\ifx\@empty\temp@ty\else
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\f@@rc#1#2\f@@rc{#3}\fi}
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\def\f@@rc#1#2#3\f@@rc#4{\def#1{#2}#4\f@rc#1{#3}{#4}}
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% Usage: \f@nfor\name:=list\do{body}
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% Like LaTeX's \@for but an empty list is treated as a list with an empty
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% element
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\newcommand{\f@nfor}[3]{\edef\@fortmp{#2}%
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\expandafter\@forloop#2,\@nil,\@nil\@@#1{#3}}
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% Usage: \def@ult \cs{defaults}{argument}
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% sets \cs to the characters from defaults appearing in argument
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% or defaults if it would be empty. All characters are lowercased.
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\newcommand\def@ult[3]{%
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\edef\temp@a{\lowercase{\edef\noexpand\temp@a{#3}}}\temp@a
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\def#1{}%
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\@forc\tmpf@ra{#2}%
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{\expandafter\if@in\tmpf@ra\temp@a{\edef#1{#1\tmpf@ra}}{}}%
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\ifx\@empty#1\def#1{#2}\fi}
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%
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% \if@in <char><set><truecase><falsecase>
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%
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\newcommand{\if@in}[4]{%
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\edef\temp@a{#2}\def\temp@b##1#1##2\temp@b{\def\temp@b{##1}}%
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\expandafter\temp@b#2#1\temp@b\ifx\temp@a\temp@b #4\else #3\fi}
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\newcommand{\fancyhead}{\@ifnextchar[{\f@ncyhf h}{\f@ncyhf h[]}}
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\newcommand{\fancyfoot}{\@ifnextchar[{\f@ncyhf f}{\f@ncyhf f[]}}
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\newcommand{\fancyhf}{\@ifnextchar[{\f@ncyhf {}}{\f@ncyhf {}[]}}
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% The header and footer fields are stored in command sequences with
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% names of the form: \f@ncy<x><y><z> with <x> for [eo], <y> form [lcr]
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% and <z> from [hf].
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\def\f@ncyhf#1[#2]#3{%
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\def\temp@c{}%
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\@forc\tmpf@ra{#2}%
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{\expandafter\if@in\tmpf@ra{eolcrhf,EOLCRHF}%
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{}{\edef\temp@c{\temp@c\tmpf@ra}}}%
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\ifx\@empty\temp@c\else
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\ifx\PackageError\undefined
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\errmessage{Illegal char `\temp@c' in fancyhdr argument:
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[#2]}\else
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\PackageError{Fancyhdr}{Illegal char `\temp@c' in fancyhdr argument:
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[#2]}{}\fi
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\fi
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\f@nfor\temp@c{#2}%
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{\def@ult\f@@@eo{eo}\temp@c
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\def@ult\f@@@lcr{lcr}\temp@c
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\def@ult\f@@@hf{hf}{#1\temp@c}%
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\@forc\f@@eo\f@@@eo
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{\@forc\f@@lcr\f@@@lcr
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{\@forc\f@@hf\f@@@hf
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{\expandafter\fancy@def\csname
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f@ncy\f@@eo\f@@lcr\f@@hf\endcsname
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{#3}}}}}}
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% Fancyheadings version 1 commands. These are more or less deprecated,
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% but they continue to work.
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\newcommand{\lhead}{\@ifnextchar[{\@xlhead}{\@ylhead}}
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\def\@xlhead[#1]#2{\fancy@def\f@ncyelh{#1}\fancy@def\f@ncyolh{#2}}
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\def\@ylhead#1{\fancy@def\f@ncyelh{#1}\fancy@def\f@ncyolh{#1}}
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\newcommand{\chead}{\@ifnextchar[{\@xchead}{\@ychead}}
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\def\@xchead[#1]#2{\fancy@def\f@ncyech{#1}\fancy@def\f@ncyoch{#2}}
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\def\@ychead#1{\fancy@def\f@ncyech{#1}\fancy@def\f@ncyoch{#1}}
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\newcommand{\rhead}{\@ifnextchar[{\@xrhead}{\@yrhead}}
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\def\@xrhead[#1]#2{\fancy@def\f@ncyerh{#1}\fancy@def\f@ncyorh{#2}}
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\def\@yrhead#1{\fancy@def\f@ncyerh{#1}\fancy@def\f@ncyorh{#1}}
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\newcommand{\lfoot}{\@ifnextchar[{\@xlfoot}{\@ylfoot}}
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\def\@xlfoot[#1]#2{\fancy@def\f@ncyelf{#1}\fancy@def\f@ncyolf{#2}}
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\def\@ylfoot#1{\fancy@def\f@ncyelf{#1}\fancy@def\f@ncyolf{#1}}
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\newcommand{\cfoot}{\@ifnextchar[{\@xcfoot}{\@ycfoot}}
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\def\@xcfoot[#1]#2{\fancy@def\f@ncyecf{#1}\fancy@def\f@ncyocf{#2}}
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\def\@ycfoot#1{\fancy@def\f@ncyecf{#1}\fancy@def\f@ncyocf{#1}}
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\newcommand{\rfoot}{\@ifnextchar[{\@xrfoot}{\@yrfoot}}
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\def\@xrfoot[#1]#2{\fancy@def\f@ncyerf{#1}\fancy@def\f@ncyorf{#2}}
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\def\@yrfoot#1{\fancy@def\f@ncyerf{#1}\fancy@def\f@ncyorf{#1}}
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\newdimen\headwidth
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\newcommand{\headrulewidth}{0.4pt}
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\newcommand{\footrulewidth}{\z@skip}
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\newcommand{\footruleskip}{.3\normalbaselineskip}
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% Fancyplain stuff shouldn't be used anymore (rather
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% \fancypagestyle{plain} should be used), but it must be present for
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% compatibility reasons.
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\newcommand{\plainheadrulewidth}{\z@skip}
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\newcommand{\plainfootrulewidth}{\z@skip}
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\newif\if@fancyplain \@fancyplainfalse
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\def\fancyplain#1#2{\if@fancyplain#1\else#2\fi}
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\headwidth=-123456789sp %magic constant
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% Command to reset various things in the headers:
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% a.o. single spacing (taken from setspace.sty)
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% and the catcode of ^^M (so that epsf files in the header work if a
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% verbatim crosses a page boundary)
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% It also defines a \nouppercase command that disables \uppercase and
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% \Makeuppercase. It can only be used in the headers and footers.
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\def\fancy@reset{\restorecr
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\def\baselinestretch{1}%
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\def\nouppercase##1{{\let\uppercase\relax\let\MakeUppercase\relax
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\expandafter\let\csname MakeUppercase \endcsname\relax##1}}%
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\ifx\undefined\@newbaseline% NFSS not present; 2.09 or 2e
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\ifx\@normalsize\undefined \normalsize % for ucthesis.cls
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\else \@normalsize \fi
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\else% NFSS (2.09) present
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\@newbaseline%
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\fi}
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% Initialization of the head and foot text.
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% The default values still contain \fancyplain for compatibility.
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\fancyhf{} % clear all
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% lefthead empty on ``plain'' pages, \rightmark on even, \leftmark on odd pages
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% evenhead empty on ``plain'' pages, \leftmark on even, \rightmark on odd pages
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\fancyhead[el,or]{\fancyplain{}{\sl\rightmark}}
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\fancyhead[er,ol]{\fancyplain{}{\sl\leftmark}}
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\fancyfoot[c]{\rm\thepage} % page number
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% Put together a header or footer given the left, center and
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% right text, fillers at left and right and a rule.
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% The \lap commands put the text into an hbox of zero size,
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% so overlapping text does not generate an errormessage.
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% These macros have 5 parameters:
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% 1. \@lodd or \@rodd % This determines at which side the header will stick
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% out.
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% 2. \f@ncyolh, \f@ncyelh, \f@ncyolf or \f@ncyelf. This is the left component.
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% 3. \f@ncyoch, \f@ncyech, \f@ncyocf or \f@ncyecf. This is the middle comp.
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% 4. \f@ncyorh, \f@ncyerh, \f@ncyorf or \f@ncyerf. This is the right component.
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% 5. \@lodd or \@rodd % This determines at which side the header will stick
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% out. This is the reverse of parameter nr. 1. One of them is always
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% \relax and the other one is \hss (after expansion).
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\def\@fancyhead#1#2#3#4#5{#1\hbox to\headwidth{\fancy@reset\vbox{\hbox
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{\rlap{\parbox[b]{\headwidth}{\raggedright#2\strut}}\hfill
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\parbox[b]{\headwidth}{\centering#3\strut}\hfill
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\llap{\parbox[b]{\headwidth}{\raggedleft#4\strut}}}\headrule}}#5}
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\def\@fancyfoot#1#2#3#4#5{#1\hbox to\headwidth{\fancy@reset\vbox{\footrule
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\hbox{\rlap{\parbox[t]{\headwidth}{\raggedright#2\strut}}\hfill
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\parbox[t]{\headwidth}{\centering#3\strut}\hfill
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\llap{\parbox[t]{\headwidth}{\raggedleft#4\strut}}}}}#5}
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\def\headrule{{\if@fancyplain\let\headrulewidth\plainheadrulewidth\fi
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\hrule\@height\headrulewidth\@width\headwidth \vskip-\headrulewidth}}
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\def\footrule{{\if@fancyplain\let\footrulewidth\plainfootrulewidth\fi
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\vskip-\footruleskip\vskip-\footrulewidth
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\hrule\@width\headwidth\@height\footrulewidth\vskip\footruleskip}}
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\def\ps@fancy{%
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\@ifundefined{@chapapp}{\let\@chapapp\chaptername}{}%for amsbook
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%
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% Define \MakeUppercase for old LaTeXen.
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% Note: we used \def rather than \let, so that \let\uppercase\relax (from
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% the version 1 documentation) will still work.
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%
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\@ifundefined{MakeUppercase}{\def\MakeUppercase{\uppercase}}{}%
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\@ifundefined{chapter}{\def\sectionmark##1{\markboth
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{\MakeUppercase{\ifnum \c@secnumdepth>\z@
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\thesection\hskip 1em\relax \fi ##1}}{}}%
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\def\subsectionmark##1{\markright {\ifnum \c@secnumdepth >\@ne
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\thesubsection\hskip 1em\relax \fi ##1}}}%
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{\def\chaptermark##1{\markboth {\MakeUppercase{\ifnum \c@secnumdepth>\m@ne
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\@chapapp\ \thechapter. \ \fi ##1}}{}}%
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\def\sectionmark##1{\markright{\MakeUppercase{\ifnum \c@secnumdepth >\z@
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\thesection. \ \fi ##1}}}}%
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%\csname ps@headings\endcsname % use \ps@headings defaults if they exist
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\ps@@fancy
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\gdef\ps@fancy{\@fancyplainfalse\ps@@fancy}%
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% Initialize \headwidth if the user didn't
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%
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\ifdim\headwidth<0sp
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%
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% This catches the case that \headwidth hasn't been initialized and the
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% case that the user added something to \headwidth in the expectation that
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% it was initialized to \textwidth. We compensate this now. This loses if
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% the user intended to multiply it by a factor. But that case is more
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% likely done by saying something like \headwidth=1.2\textwidth.
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% The doc says you have to change \headwidth after the first call to
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% \pagestyle{fancy}. This code is just to catch the most common cases were
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% that requirement is violated.
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%
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\global\advance\headwidth123456789sp\global\advance\headwidth\textwidth
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\fi}
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\def\ps@fancyplain{\ps@fancy \let\ps@plain\ps@plain@fancy}
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\def\ps@plain@fancy{\@fancyplaintrue\ps@@fancy}
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\let\ps@@empty\ps@empty
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\def\ps@@fancy{%
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\ps@@empty % This is for amsbook/amsart, which do strange things with \topskip
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\def\@mkboth{\protect\markboth}%
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\def\@oddhead{\@fancyhead\@lodd\f@ncyolh\f@ncyoch\f@ncyorh\@rodd}%
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\def\@oddfoot{\@fancyfoot\@lodd\f@ncyolf\f@ncyocf\f@ncyorf\@rodd}%
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\def\@evenhead{\@fancyhead\@rodd\f@ncyelh\f@ncyech\f@ncyerh\@lodd}%
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\def\@evenfoot{\@fancyfoot\@rodd\f@ncyelf\f@ncyecf\f@ncyerf\@lodd}%
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}
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\def\@lodd{\if@reversemargin\hss\else\relax\fi}
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\def\@rodd{\if@reversemargin\relax\else\hss\fi}
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\newif\iffootnote
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\let\latex@makecol\@makecol
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\def\@makecol{\ifvoid\footins\footnotetrue\else\footnotefalse\fi
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\let\topfloat\@toplist\let\botfloat\@botlist\latex@makecol}
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\def\iftopfloat#1#2{\ifx\topfloat\empty #2\else #1\fi}
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\def\ifbotfloat#1#2{\ifx\botfloat\empty #2\else #1\fi}
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\def\iffloatpage#1#2{\if@fcolmade #1\else #2\fi}
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\newcommand{\fancypagestyle}[2]{%
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\@namedef{ps@#1}{\let\fancy@def\def#2\relax\ps@fancy}}

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