fish-shell/lexicon_filter.in

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#! @sed@ -f
#.
# A Doxygen filter for building Fish's lexicon, for documentation bling.
#.
# Written specially for Fish, the shell for the 90's, in sed, the state of the
# art text processor from the 70's. Who's sed? sed's dead, baby, sed's dead.*
# by Mark Griffiths <mark@thebespokepixel.com> *but quite portable
#.
# Finds /fish../endfish blocks in documentation source files and enhances
# markup. Requires that the four character word 'classes' declared here are
# added to Doxyfiles as aliases i.e.:
#.
# Enhance for HTML Help pages (Doxyfile.user)…
# ALIASES = "fish=\htmlonly[block] \n<pre class=\"fish\">"
# ALIASES += "fish{1}=\htmlonly[block] \n<pre class=\"fish \1\">"
# ALIASES += "endfish=</pre>\endhtmlonly \n"
#.
# ALIASES += "blah{1}=<span class=\"comment\">\1</span>"
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# ALIASES += "bltn{1}=<span class=\"command\">\1</span>" and so on...
#.
# And simplify for man pages (Doxyfile.help)…
# ALIASES = "fish=<pre>"
# ALIASES += "fish{1}=<pre>"
# ALIASES += "endfish=</pre>"
#.
# ALIASES += "blah{1}=\1"
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# ALIASES += "bltn{1}=<em>\1</em>"...
#.
# It's meant to only ever be run once, during make, as Doxygen's 'INPUT
# FILTER', though can be run interactively by passing a file in via stdin. It
# wont respond to arguments.
#.
# It's most easily tested by passing test strings into the compiled script:
#.
# echo "/fish Line to test" | ./fish_lexicon_filter
#.
# The, at times, archiac looking regex is down to ensuring portable sed BREs
#.
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# This code is licensed with fish under the GPL 2.0.
#.
# Pattern flow control for scanning doc.h
/\\fish/,/\\endfish/ {
# Open \fish block, firstly it it's on it's own line
/^\\fish$/b
/^\\fish{[^}]*}$/b
# Then if it's inline. Remove and process immediately...
/^\\fish.*$/ {
# Catch @ symbol
s/@/(at)/
s/^\\fish//
s/\\endfish//
b html
}
# Output blank lines
/^$/b
# Inside \fish block. Process...
/\\endfish/!{
# Catch @ symbol
s/@/((d))/
# Preprocess HTML and HTML-like formatting
/<[^>]*>/ {
b html
}
# Process the rest
b process
}
# End block
/\\endfish/b
}
#.
# This is not the pattern we're looking for
b
#.
# Process any HTML tags.
# Structured to reduce sed's greediness.
:html
# Spans
s|<span style=['"]\([^'"][^'"]*\)">|@span{\1,|
s|<span class=['"]\([^'"][^'"]*\)">|@spcl{\1,|
s|</span>|}|
#.
# Bold
s|<b>|@bold{|
s|<b [^>]*>|@bold{|
s|</b>|}|
#.
# Strong (synonimous with emphasis)
s|<strong>|@bold{|
s|<strong [^>]*>|@bold{|
s|</strong>|}|
#.
# EMPHasis
s|<em>|@emph{|
s|<em [^>]*>|@emph{|
s|</em>|}|
#.
# Italic (synonimous with emphasis)
s|<i>|@emph{|
s|<i [^>]*>|@emph{|
s|</i>|}|
#.
# UNDeRline
s|<u>|@undr{|
s|<u [^>]*>|@undr{|
s|</u>|}|
t html
#.
# Some handy non-standard extensions
# autoSuGgeSTion
s|<s>|@sgst{|
s|<s [^>]*>|@sgst{|
s|</s>|}|
#.
# MaTCH
s|<m>|@mtch{|
s|<m [^>]*>|@mtch{|
s|</m>|}|
#.
# SearchMaTCh
s|<sm>|@smtc{|
s|<sm [^>]*>|@smtc{|
s|</sm>|}|
#.
# ERrOR
s|<error>|@eror{|
s|<error [^>]*>|@eror{|
s|</error>|}|
#.
# AsIs - protect from auto-formatting
s|<asis>|@asis{|
s|</asis>|}|
#.
# OUTPut - protect from auto-formatting
s|<outp>|@outp{|
s|</outp>|}|
t html
#.
# Clean other unhandled html
s|<\([A-Za-z][A-Za-z]*\)[^>]*>\([^<]*\)</\1>|\2|
t html
#.
# Start processing entities
:process
# Output:
# Line marked as output pass through
/@outp/ {
b
}
# Comments:
# Capture full line comments
/^\( *\)#\(.*\)$/ {
# Assume any line starting with a # is complete
s//\1@blah{\2}/
t
}
# Match sub-line comments
/#[0-9a-fA-F][0-9a-fA-F][0-9a-fA-F]/ ! {
s/#\(.*$\)/\\\
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<@blah{#\1}\
/
}
#.
# Protected entities These shouldn't allow nested structure, so we move them
# to a marked, new line for a future extract/process/insert action.
#.
# AsIs block - resists formatting.
s/@asis{\(.*\)}/\\\
<@asis{\1}\
/g
#.
# Manual <span>
s/@span{\(.*\)}/\\\
<@span{\1}\
/g
#.
# String Literals
s/"\([^"]*\)"/\\\
<@dblq{\1}\
/g
s/'\([^']*\)'/\\\
<@sglq{\1}\
/g
#.
# AutoSuggestions.
s/@sgst{\([^}]*\)}/\\\
<@sgst{\1}\
/
#.
# Command/Function options
# Short options
s/\([[( ]\)-\([A-Za-z][A-Za-z]*\)\([^A-Za-z}]\)/\1\\\
<@opts{-\2}\
\3/g
#.
# Long options
s/\([[( ]\)--\([A-Za-z][A-Za-z0-9=_-]*\)\([^A-Za-z0-9=_-]*\)/\1\\\
<@opts{--\2}\
\3/g
#.
# Prompt
s/~>_/\\\
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<@prmt{\
<@path{~}\
}/
s/^>_/@prmt/
#.
# Cursor
#.
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s/___$/@curs/
s/___\(.\)/\\\
<@curs{\1}\
/
#.
# Escaped Options
s/ \\\([A-Za-z0-9][A-Za-z0-9]*\) / @bksl{\1} /g
#.
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# Trailing Backslash
s/ \\$/ @bksl{ }/
#.
# Paths
/\n<@dblq[^}]*[~/]/b protect
/\n<@sglq[^}]*[~/]/b protect
/\n<@span[^}]*[~/]/b protect
#.
# Normal Directory
s|mkdir |mkdir :|
s|\([~/:][/]*[.A-Za-z_0-9/-]*\)\\ |\1=|g
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s| \([~/][/]*[.A-Za-z_0-9/=-]*\)| \\\
<@path{\1}\
|g
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s| \(:[/]*[.A-Za-z_0-9/=-]*\)| \\\
<@path{\1}\
|g
t protect
#.
# Dot Relative Directory (no spaces in path)
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s| \(./[A-Za-z_0-9/-]*\)| \\\
<@path{\1}\
|g
b protect
#.
# Tidy up. Merge back 'pure' entities from hold space.
:tidy
#.
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# Convert loose text to arguments
s/ \([a-zA-Z0-9+%*.-][{},a-zA-Z0-9%*._/?!=-]*\)/ @args{\1}/g
#.
# Or when tight to a newline
s|\n\([a-zA-Z0-9+%*.-][{},a-zA-Z0-9%*._/?!-]*\)|\
@args{\1}|g
#.
# Or when tight to the beginning
s|^\([a-zA-Z][{},a-zA-Z0-9%*._/?!-]*\)|@args{\1}|g
#.
# Pick up loose text after markup.
s/\([})]\)\([a-zA-Z0-9+%*.,][,a-zA-Z0-9%*._/?!-]*\);/\1@args{\2};/g
s/\([})]\)\([a-zA-Z0-9+%*.,][,a-zA-Z0-9%*._/?!-]*\)$/\1@args{\2}/g
#.
# Uncomment the following 2 lines (ss) to log the pattern buffer.
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s/^.*$/Pattern : &/w lexicon.log
s/^Pattern : //
#.
# Uncomment the following 4 lines (xssx) to log the hold buffer.
x
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s/^.*$/HoldBufr: &/w lexicon.log
s/^HoldBufr: //
x
#.
# Tack the hold space to the end of the pattern buffer.
G
#.
# Uncomment the folowing two lines (ss) to log the buffer join.
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s/^.*$/Joined : &/w lexicon.log
s/^Joined : //
#.
# Iterate over alternate lines, matching '<' to '\'
:join
s,\([^\\ ]*\)\\\n\([^<]*\)<\(@[^}]*[}\\]\),\1\3\2,
t join
# Clean up stray new lines
s/\n//g
#.
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# Uncomment the folowing two lines (ss) to log the buffer before 'cleaning'.
s/^.*$/PreClean: &/w lexicon.log
s/^PreClean: //
# Clean up special cases
#.
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/@blah/{
s/\(blah{[^@]*\)@sglq{\([^}]*\)}/\1'\2'/
s/\(blah{[^@]*\)@dblq{\([^}]*\)}/\1"\2"/
s/\(blah{[^@]*\)@....{\([^}]*\)}/\1\2/
}
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/@dblq/{
:cleandblq
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s/\(dblq{[^@}<]*\)[<]*@...[^q]{\([^}]*\)}/\1\2/
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t cleandblq
}
/@sglq/{
:cleansglq
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s/\(sglq{[^@}<]*\)[<]*@...[^q]{\([^}]*\)}/\1\2/
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t cleansglq
}
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/@vars/{
:cleanvars
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s/\(vars{@optr{$}[^@}]*\)@bltn{\([^}]*\)}/\1\2/
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s/\(vars{@optr{$}[^@}]*\)@func{\([^}]*\)}/\1\2/
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s/\(vars{@optr{$}[^@}]*\)@cmnd{\([^}]*\)}/\1\2/
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s/\(vars{@optr{$}[^@}]*\)@args{\([^}]*\)}/\1\2/
t cleanvars
}
/@redr/{
:cleanredr
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s/\(redr{[^@}]*\)@bltn{\([^}]*\)}/\1\2/
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s/\(redr{[^@}]*\)@func{\([^}]*\)}/\1\2/
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s/\(redr{[^@}]*\)@cmnd{\([^}]*\)}/\1\2/
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s/\(redr{[^@}]*\)@fsfo{\([^}]*\)}/\1\2/
s/\(redr{[^}]*\)}\( *\)@path{\([^}]*\)/\1\2\3/
t cleanredr
}
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/@sgst/{
s/@sgst{<@/@sgst{@/
:cleansgst
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s/\(sgst{@curs{.}[^@]*\)@bltn{\([^}]*\)}/\1\2/
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s/\(sgst{@curs{.}[^@]*\)@func{\([^}]*\)}/\1\2/
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s/\(sgst{@curs{.}[^@]*\)@cmnd{\([^}]*\)}/\1\2/
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s/\(sgst{@curs{.}[^@]*\)@opts{\([^}]*\)}/\1\2/
s/\(sgst{@curs{.}[^@]*\)@path{\([^}]*\)}/\1\2/
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s/\(sgst{@curs{.}[^@]*\)@args{\([^}]*\)}/\1\2/
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s/\(sgst{@curs{.}[^@]*\)@fsfo{\([^}]*\)}/\1\2/
t cleansgst
}
/@fsfo/{
:cleanfsfo
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s/\(fsfo{[^@}]*\)@bltn{\([^}]*\)}/\1\2/
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s/\(fsfo{[^@}]*\)@func{\([^}]*\)}/\1\2/
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s/\(fsfo{[^@}]*\)@cmnd{\([^}]*\)}/\1\2/
t cleanfsfo
}
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/@prmt{/{
s/@prmt{<@path/@prmt{@path/
}
#.
# Restore Paths
/@fsfo/ {
s/\(@fsfo{[^=]*\)=/\1 /
}
/@path/ {
:cleanpath
s/\(@path{[^:]*\):/\1/
s/\(@path{[^=]*\)=/\1\\ /
t cleanpath
s/@path{}//
}
#.
# Finally, restructure to follow Fish's command [arguments] semantics.
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# Find the initial command, and change any others to arguments, up to a |, ( or ;
# Assumes that a valid line will start with either a builtin, a function or a binary.
#.
# 'if' and 'for' seem to be special cases
#.
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# Uncomment the folowing two lines (ss) to log the buffer before semantic conversion.
s/^.*$/PreArgs : &/w lexicon.log
s/^PreArgs : //
#.
# Find initial commands/functions/binaries
#.
# Store prmt, if present
#.
/@prmt/ {
h
s/^\(@prmt *\).*$/\1/
x
s/^@prmt *//
}
#.
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# Special case for optional commands
s/@args{\[@bltn/@args{[@xbln/g
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# Special case for one-line 'if' statements
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/@bltn{if}/ {
s//@xbln{if}/
s/@bltn{set}/@xbln{set}/
s/@bltn{not}/@xbln{not}/
s/@bltn{else}/@xbln{else}/
s/@bltn{contains}/@xbln{contains}/
s/@bltn{test}/@xbln{test}/
s/@bltn{end}/@xbln{end}/
s/@cmnd{grep}/@xcmd{grep}/
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}
# one-line 'for' statements
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/@bltn{for}/ {
s//@xbln{for}/
s/@args{in}/@xbln{in}/
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}
# one-line 'begin' statements
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/@bltn{begin}/ {
s//@xbln{begin}/
s/@bltn{end}/@xbln{end}/
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}
# one-line 'break' statements
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/@bltn{break}/ {
s//@xbln{break}/
s/@bltn{end}/@xbln{end}/
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}
# one-line 'continue' statements
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/@bltn{continue}/ {
s//@xbln{continue}/
s/@bltn{end}/@xbln{end}/
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}
# one-line 'switch' statements
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/@bltn{switch}/ {
s//@xbln{switch}/
s/@bltn{case}/@xbln{case}/
s/@bltn{end}/@xbln{end}/
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}
# one-line 'function' statements
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/@bltn{function}/ {
s//@xbln{function}/
s/@bltn{return}/@xbln{return}/
s/@bltn{end}/@xbln{end}/
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}
# one-line 'bind' statements - special input functions
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/@bltn{bind}/ {
s//@xbln{bind}/
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s/@....{\([a-z]*\)}\(-[a-z-]*\)/@args{\1\2}/
}
# one-line 'builtin' statements
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s/@bltn{builtin} @bltn/@xbln{builtin} @xbln/g
s/@bltn{builtin} @cmnd/@xbln{builtin} @xcmd/g
s/@bltn{builtin} @func/@xbln{builtin} @xfnc/g
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#.
# one-line 'command' statements
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s/@bltn{command} @bltn/@xbln{command} @xbln/g
s/@bltn{command} @cmnd/@xbln{command} @xcmd/g
s/@bltn{command} @func/@xbln{command} @xfnc/g
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#.
# one-line 'and/or' statements
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s/@bltn{and} @bltn/@xbln{and} @xbln/g
s/@bltn{and} @cmnd/@xbln{and} @xcmd/g
s/@bltn{and} @func/@xbln{and} @xfnc/g
s/@bltn{or} @bltn/@xbln{or} @xbln/g
s/@bltn{or} @cmnd/@xbln{or} @xcmd/g
s/@bltn{or} @func/@xbln{or} @xfnc/g
#.
s/^\( *\)@cmnd/\1@xcmd/
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s/\( *[;()] *\)@cmnd/\1@xcmd/g
s/\( *@redr{|} *\)@cmnd/\1@xcmd/g
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s/^\( *\)@bltn/\1@xbln/
s/\( *[;()] *\)@bltn/\1@xbln/g
s/\( *@redr{|} *\)@bltn/\1@xbln/g
s/^\( *\)@func/\1@xfnc/
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s/\( *[;()] *\)@func/\1@xfnc/g
s/\( *@redr{|} *\)@func/\1@xfnc/g
s/ @bksl{\([^}]*\)} / @args{@bksl{\1}} /g
s/ @bksl{@bltn{\([^}]*\)}/ @args{@bksl{\1}/g
s/ @bksl{@func{\([^}]*\)}/ @args{@bksl{\1}/g
s/ @bksl{@cmnd{\([^}]*\)}/ @args{@bksl{\1}/g
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s/@bltn/@args/g
s/@func/@args/g
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s/@cmnd/@args/g
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#.
s/^.*$/PostArgs: &/w lexicon.log
s/^PostArgs: //
#.
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s/xbln/bltn/g
s/xfnc/func/g
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s/xcmd/cmnd/g
x
/^@prmt/ {
G
s/^@prmt \n/@prmt /
}
/^@prmt/ ! {
x
}
#.
# Mark up sesitive character entities.
#.
# We comment out this target because it isn't referenced and if we don't we
# get warnings about "unused label 'entities'".
#:entities
s/</\&lt;/g
s/>/\&gt;/g
s/((d))/@/g
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#.
# Final post processing
s/};\([^]]\)/}@redr{;}\1/g
s/};$/}@redr{;}/
s/ \[\([@(]\)/ @args{[}\1/g
s/ \[\([A-Z]*\) / @args{[\1} /g
s/@args{\([a-zA-Z0-9_.]*\)}\]/@args{\1]}/g
s/@args{\([a-zA-Z0-9_.]*\)}: /@args{\1:} /g
s/@bltn{echo} @fsfo/@bltn{echo} @args/g
s/@bltn{echo}\([a-zA-Z0-9.@{} _-]*\)@fsfo/@bltn{echo}\1@args/g
s/ \] / @args{]} /g
s/ \]$/ @args{]}/g
s/\]}\]$/]]}/
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s/\\\([()]\)/@optr{@bksl{\1}}/g
s/\([()]\)/@optr{\1}/g
s/\\n/@bksl{n}/
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s/ \\$//
#.
# Uncomment the folowing two lines (ss) to log the final output, sent to Doxygen.
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s/^.*$/Output : &\
\
/w lexicon.log
s/^Output : //
s/\n\n$//
#.
# Lines are reassembled, so branch to end
b
# === Main End ===
#.
#.
# === Subroutines ===
# Branched to when content requires.
#.
# Move protected content to hold space and mark up other entities.
:protect
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s/^.*$/Input : &/w lexicon.log
s/^Input : //
h
# Clear out any content that has already been marked up, to prevent futher
# markup on words that should be left alone.
#.
:patternflush
s/\n<@[^}]*[}\\]//
s/\\ [^\\]*$/\\/
t patternflush
s/\n$//g
#.
# Swap the pattern and hold buffers and remove unmarked lines and extra
# characters. Basically the inverse of the 'patternflush' action, with
# additional trailing characters stripped.
x
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/^<@[^}]*$/ ! {
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s/[^\<]*//
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s/^ *\\\n//g
s/\n *\\//g
s/[()] \\//g
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s/^[^\<][^@][^\\]*//
s/\n[]|;) ][^\\]*\\//
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s/\n[]|;) a-zA-Z0-9-][^\\]*$//
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s/\n[]|;)}]\\//
s/\n[]|;)}]\n//
s/\n[]|;)}]$//
s/[()]$//
s/}@curs/}/
s/\n@curs$//
s/\n[^\<@][^\\]*\\//
s/\n[^\<@][^\\]*//
s/^\\//
s/\n$//g
}
s/\\\n/\
/
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s/< \n//
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s/^[a-z][a-z]* \n//
#.
# Swap the buffers back.
x
#.
# A special case. Tidy up after commands.
# Redirectors
s/\([^{|] *\)|/\1@redr{|}/g
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s/&$/@redr{\&amp;}/
s/\([^{&] *\)&[^a-z]/\1@redr{\&amp;}/g
s/\([^{<>^] *\)\([0-9]* *[<>^][<>^]*[^@][a-zA-Z0-9./_-]*\)/\1@redr{\2}/g
s/\\}/}\\/g
#.
# Now we can add in 'unsafe' entities that would be too greedy.
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# Arrays
s/[[][0-9$a-zA-Z_;. -]*]/@args{&}/g
#.
# Declared Variables
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s/\($[$]*\)\([A-Za-z_0-9][A-Za-z_0-9]*\)/@vars{@optr{\1}\2}/g
#.
# Files
s/\([^@]\)\([A-Za-z0-9_-][A-Za-z0-9_-]*\.[a-z0-9*][a-z0-9*]*\)/\1@fsfo{\2}/g
#.
# We comment out this target because it isn't referenced and if we don't we
# get warnings about "unused label 'commands'".
#:commands
#.
#### This section is built in the Makefile. Just some formatting examples. #####
#.
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# Fish builtin (bltn) <- 4 character code that has a Doxygen alias counterpart
# template : s/[[:<:]]function[[:>:]]/@bltn{&}/
#.
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# s,[[:<:]]function[[:>:]],@bltn{function},g
# s,[[:<:]]begin[[:>:]],@bltn{begin},g
# ...
#.
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# Fish functions (func)
# Populated by 'public' functions' filename.
#.
# s,[[:<:]]fish_pwd[[:>:]],@func{fish_pwd},g
# s,[[:<:]]fish_prompt[[:>:]],@func{fish_prompt},g
# ...
#.
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# Shell Command (cmnd)
# Populated from completion filenames
#.
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# s,[[:<:]]seq[[:>:]],@cmnd{seq},g
# s,[[:<:]]rm[[:>:]],@cmnd{rm},g
# ...
#.
# Color Variable (clrv)
# Populated from __fish_config_interactive.fish
# Allows fish's 'special' color variables to be identified
#.
# s,[[:<:]]fish_color_normal[[:>:]],@clrv{fish_color_normal},g
# s,[[:<:]]fish_color_command[[:>:]],@clrv{fish_color_command},g
#.
# Once all of the commands/functions/variables/special's have been marked up,
# branch back to tidy up and collapse the pattern/hold buffers back to a
# single line.
#.
# b tidy
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#.
#.
# Below is a special section that adds vocabuarly to the lexicon during 'make'.
# As the lexicon is written into the output lexicon_filter, portability is
# automatically handled.
#.
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#.!# cmnd whoami
#.!# cmnd mkdir
#.!# cmnd basename
#.!# bltn sleep
#.!# args in