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.

“	A typical Unix /bin or /usr/bin directory contains a hundred different kinds of programs, written by dozens of egotistical programmers, each with its own syntax, operating paradigm, rules of use ... strategies for specifying options, and different sets of constraints.	”
— 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;