isalpha_l(3) manual page

The isalpha() and isalpha_l() functions test for any character for which isupper(3), isupper_l(3) or islower(3), islower_l(3) is true. The value of the argument must be representable as an unsigned char or the value of EOF.

In the ASCII character set, this includes the following characters (with their numeric values shown in octal):

amp;101 ``A'' 102 ``B'' 103 ``C'' 104 ``D'' 105 ``E''

amp;106 ``F'' 107 ``G'' 110 ``H'' 111 ``I'' 112 ``J''

amp;113 ``K'' 114 ``L'' 115 ``M'' 116 ``N'' 117 ``O''

amp;120 ``P'' 121 ``Q'' 122 ``R'' 123 ``S'' 124 ``T''

amp;125 ``U'' 126 ``V'' 127 ``W'' 130 ``X'' 131 ``Y''

amp;132 ``Z'' 141 ``a'' 142 ``b'' 143 ``c'' 144 ``d''

amp;145 ``e'' 146 ``f'' 147 ``g'' 150 ``h'' 151 ``i''

amp;152 ``j'' 153 ``k'' 154 ``l'' 155 ``m'' 156 ``n''

amp;157 ``o'' 160 ``p'' 161 ``q'' 162 ``r'' 163 ``s''

amp;164 ``t'' 165 ``u'' 166 ``v'' 167 ``w'' 170 ``x''

amp;171 ``y'' 172 ``z'' amp; amp; amp;

The isalpha_l() function takes an explicit locale argument, whereas the isalpha() function uses the current global or per-thread locale.

“	This philosophy, in the hands of amateurs, leads to inexplicably mind-numbing botches like the existence of two programs, “head” and “tail,” which print the first part or the last part of a file, depending. Even though their operations are duals of one another, “head” and “tail” are different programs, written by different authors, and take different options!	”
— The Unix Haters' handbook

Manual Pages — ISALPHA

NAME

CONTENTS

LIBRARY

SYNOPSIS

DESCRIPTION

RETURN VALUES

COMPATIBILITY

SEE ALSO

STANDARDS

amp;101 ``A''	102 ``B''	103 ``C''	104 ``D''	105 ``E''
amp;106 ``F''	107 ``G''	110 ``H''	111 ``I''	112 ``J''
amp;113 ``K''	114 ``L''	115 ``M''	116 ``N''	117 ``O''
amp;120 ``P''	121 ``Q''	122 ``R''	123 ``S''	124 ``T''
amp;125 ``U''	126 ``V''	127 ``W''	130 ``X''	131 ``Y''
amp;132 ``Z''	141 ``a''	142 ``b''	143 ``c''	144 ``d''
amp;145 ``e''	146 ``f''	147 ``g''	150 ``h''	151 ``i''
amp;152 ``j''	153 ``k''	154 ``l''	155 ``m''	156 ``n''
amp;157 ``o''	160 ``p''	161 ``q''	162 ``r''	163 ``s''
amp;164 ``t''	165 ``u''	166 ``v''	167 ``w''	170 ``x''
amp;171 ``y''	172 ``z''	amp;	amp;	amp;