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$
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`*'
`+'
`-'
`.'
`:]' in regex
`?'
`['
`[:' in regex
`[^'
\
`\'
`\''
\(
\)
`\<'
`\>'
`\`'
`\B'
`\b'
`\S'
`\s'
`\W'
`\w'
`\{'
\|
`\}'
`]'
^
`^'
allocated initialization
alternation operator
alternation operator and `^'
anchoring
anchors, anchors
Awk
back references
backtracking, backtracking
beginning-of-line operator
bracket expression
buffer field, set by re_compile_pattern
buffer initialization
character classes
Egrep
Emacs
end in struct re_registers
end-of-line operator
fastmap initialization
fastmap_accurate field, set by re_compile_pattern
fastmaps
Grep
grouping
ignoring case
interval expression
matching list
matching newline
matching with GNU functions
newline_anchor field in pattern buffer
nonmatching list
not_bol field in pattern buffer
num_regs in struct re_registers
open-group operator and `^'
or operator
parenthesizing
pattern buffer initialization
pattern buffer, definition of
POSIX Awk
range argument to re_search
re_nsub field, set by re_compile_pattern
re_pattern_buffer definition
re_registers
re_syntax_options initialization
REG_EXTENDED
REG_ICASE
REG_NEWLINE
REG_NOSUB
regex.c
regex.h
regexp anchoring
regmatch_t
regs_allocated
REGS_FIXED
REGS_REALLOCATE
REGS_UNALLOCATED
regular expressions, syntax of
searching with GNU functions
start argument to re_search
start in struct re_registers
struct re_pattern_buffer definition
subexpressions
syntax bits
syntax field, set by re_compile_pattern
syntax initialization
syntax of regular expressions
translate initialization
used field, set by re_compile_pattern
word boundaries, matching
`{'
|
`}'
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