moderrs.mk revision 1.23
1 # $NetBSD: moderrs.mk,v 1.23 2020/11/01 10:56:08 rillig Exp $ 2 # 3 # various modifier error tests 4 5 '= '\'' 6 VAR= TheVariable 7 # in case we have to change it ;-) 8 MOD_UNKN= Z 9 MOD_TERM= S,V,v 10 MOD_S:= ${MOD_TERM}, 11 12 FIB= 1 1 2 3 5 8 13 21 34 13 14 all: mod-unknown-direct mod-unknown-indirect 15 all: unclosed-direct unclosed-indirect 16 all: unfinished-indirect unfinished-loop 17 all: loop-close 18 all: words 19 all: exclam 20 all: mod-subst-delimiter 21 all: mod-regex-delimiter 22 all: mod-regex-undefined-subexpression 23 all: mod-ts-parse 24 all: mod-t-parse 25 all: mod-ifelse-parse 26 all: mod-remember-parse 27 all: mod-sysv-parse 28 29 mod-unknown-direct: print-header print-footer 30 @echo 'want: Unknown modifier $'Z$'' 31 @echo 'VAR:Z=before-${VAR:Z}-after' 32 33 mod-unknown-indirect: print-header print-footer 34 @echo 'want: Unknown modifier $'Z$'' 35 @echo 'VAR:${MOD_UNKN}=before-${VAR:${MOD_UNKN}:inner}-after' 36 37 unclosed-direct: print-header print-footer 38 @echo 'want: Unclosed variable specification (expecting $'}$') for "VAR" (value "Thevariable") modifier S' 39 @echo VAR:S,V,v,=${VAR:S,V,v, 40 41 unclosed-indirect: print-header print-footer 42 @echo 'want: Unclosed variable specification after complex modifier (expecting $'}$') for VAR' 43 @echo VAR:${MOD_TERM},=${VAR:${MOD_S} 44 45 unfinished-indirect: print-header print-footer 46 @echo 'want: Unfinished modifier for VAR ($',$' missing)' 47 -@echo "VAR:${MOD_TERM}=${VAR:${MOD_TERM}}" 48 49 unfinished-loop: print-header print-footer 50 @echo 'want: Unfinished modifier for UNDEF ($'@$' missing)' 51 @echo ${UNDEF:U1 2 3:@var} 52 @echo 'want: Unfinished modifier for UNDEF ($'@$' missing)' 53 @echo ${UNDEF:U1 2 3:@var (a] ...} 54 @echo ${UNDEF:U1 2 3:@var@${var}@} 55 56 # The closing brace after the ${var} is part of the replacement string. 57 # In ParseModifierPart, braces and parentheses don't have to be balanced. 58 # This is contrary to the :M, :N modifiers, where both parentheses and 59 # braces must be balanced. 60 # This is also contrary to the SysV modifier, where only the actually 61 # used delimiter (either braces or parentheses) must be balanced. 62 loop-close: print-header print-footer 63 @echo ${UNDEF:U1 2 3:@var@${var}}...@ 64 @echo ${UNDEF:U1 2 3:@var@${var}}...@} 65 66 words: print-header print-footer 67 @echo 'want: Unfinished modifier for UNDEF ($']$' missing)' 68 @echo ${UNDEF:U1 2 3:[} 69 @echo 'want: Unfinished modifier for UNDEF ($']$' missing)' 70 @echo ${UNDEF:U1 2 3:[#} 71 72 # out of bounds => empty 73 @echo 13=${UNDEF:U1 2 3:[13]} 74 75 # Word index out of bounds. 76 # 77 # On LP64I32, strtol returns LONG_MAX, 78 # which is then truncated to int (undefined behavior), 79 # typically resulting in -1. 80 # This -1 is interpreted as "the last word". 81 # 82 # On ILP32, strtol returns LONG_MAX, 83 # which is a large number. 84 # This results in a range from LONG_MAX - 1 to 3, 85 # which is empty. 86 @echo 12345=${UNDEF:U1 2 3:[123451234512345123451234512345]:S,^$,ok,:S,^3$,ok,} 87 88 exclam: print-header print-footer 89 @echo 'want: Unfinished modifier for VARNAME ($'!$' missing)' 90 @echo ${VARNAME:!echo} 91 # When the final exclamation mark is missing, there is no 92 # fallback to the SysV substitution modifier. 93 # If there were a fallback, the output would be "exclam", 94 # and the above would have produced an "Unknown modifier '!'". 95 @echo 'want: Unfinished modifier for ! ($'!$' missing)' 96 @echo ${!:L:!=exclam} 97 98 mod-subst-delimiter: print-header print-footer 99 @echo 1: ${VAR:S 100 @echo 2: ${VAR:S, 101 @echo 3: ${VAR:S,from 102 @echo 4: ${VAR:S,from, 103 @echo 5: ${VAR:S,from,to 104 @echo 6: ${VAR:S,from,to, 105 @echo 7: ${VAR:S,from,to,} 106 107 mod-regex-delimiter: print-header print-footer 108 @echo 1: ${VAR:C 109 @echo 2: ${VAR:C, 110 @echo 3: ${VAR:C,from 111 @echo 4: ${VAR:C,from, 112 @echo 5: ${VAR:C,from,to 113 @echo 6: ${VAR:C,from,to, 114 @echo 7: ${VAR:C,from,to,} 115 116 # In regular expressions with alternatives, not all capturing groups are 117 # always set; some may be missing. Warn about these. 118 # 119 # Since there is no way to turn off this warning, the combination of 120 # alternative matches and capturing groups is not widely used. 121 # 122 # A newly added modifier 'U' such as in :C,(a.)|(b.),\1\2,U might be added 123 # for treating undefined capturing groups as empty, but that would create a 124 # syntactical ambiguity since the :S and :C modifiers are open-ended (see 125 # mod-subst-chain). Luckily the modifier :U does not make sense after :C, 126 # therefore this case does not happen in practice. 127 # The sub-modifier for the :S and :C modifiers would have to be chosen 128 # wisely, to not create ambiguities while parsing. 129 mod-regex-undefined-subexpression: print-header print-footer 130 @echo ${FIB:C,1(.*),one\1,} # all ok 131 @echo ${FIB:C,1(.*)|2(.*),(\1)+(\2),:Q} # no match for subexpression 132 133 mod-ts-parse: print-header print-footer 134 @echo ${FIB:ts} 135 @echo ${FIB:ts\65} # octal 065 == U+0035 == '5' 136 @echo ${FIB:ts\65oct} # bad modifier 137 @echo ${FIB:tsxy} # modifier too long 138 139 mod-t-parse: print-header print-footer 140 @echo ${FIB:t 141 @echo ${FIB:txy} 142 @echo ${FIB:t} 143 @echo ${FIB:t:M*} 144 145 mod-ifelse-parse: print-header print-footer 146 @echo ${FIB:? 147 @echo ${FIB:?then 148 @echo ${FIB:?then: 149 @echo ${FIB:?then:else 150 @echo ${FIB:?then:else} 151 152 mod-remember-parse: print-header print-footer 153 @echo ${FIB:_} # ok 154 @echo ${FIB:__} # modifier name too long 155 156 mod-sysv-parse: print-header print-footer 157 @echo ${FIB:3 158 @echo ${FIB:3= 159 @echo ${FIB:3=x3 160 @echo ${FIB:3=x3} # ok 161 162 print-header: .USEBEFORE 163 @echo $@: 164 print-footer: .USE 165 @echo 166
Indexes created Tue Sep 30 11:09:46 GMT 2025