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syntax: perl: don't color the character after a variable name

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And generally improve the regex for coloring Perl variable names.

This fixes https://savannah.gnu.org/bugs/?56713.
With-help-from: Brand Huntsman <alpha@qzx.com>

Bug existed since the Perl syntax was introduced,
in version 1.2.2, commit 70047eef.
This commit is contained in:
Benno Schulenberg 2019-08-04 12:46:07 +02:00
parent f773fa3968
commit cd274a7830
1 changed files with 7 additions and 1 deletions
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8
syntax/perl.nanorc
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@ -7,7 +7,13 @@ comment "#"
color red "\<(accept|alarm|atan2|bin(d|mode)|c(aller|h(dir|mod|op|own|root)|lose(dir)?|onnect|os|rypt)|d(bm(close|open)|efined|elete|ie|o|ump)|e(ach|of|val|x(ec|ists|it|p))|f(cntl|ileno|lock|ork))\>" "\<(get(c|login|peername|pgrp|ppid|priority|pwnam|(host|net|proto|serv)byname|pwuid|grgid|(host|net)byaddr|protobynumber|servbyport)|([gs]et|end)(pw|gr|host|net|proto|serv)ent|getsock(name|opt)|gmtime|goto|grep|hex|index|int|ioctl|join)\>" "\<(keys|kill|last|length|link|listen|local(time)?|log|lstat|m|mkdir|msg(ctl|get|snd|rcv)|next|oct|open(dir)?|ord|pack|pipe|pop|printf?|push|q|qq|qx|rand|re(ad(dir|link)?|cv|do|name|quire|set|turn|verse|winddir)|rindex|rmdir|s|scalar|seek(dir)?)\>" "\<(se(lect|mctl|mget|mop|nd|tpgrp|tpriority|tsockopt)|shift|shm(ctl|get|read|write)|shutdown|sin|sleep|socket(pair)?|sort|spli(ce|t)|sprintf|sqrt|srand|stat|study|substr|symlink|sys(call|read|tem|write)|tell(dir)?|time|tr(y)?|truncate|umask)\>" "\<(un(def|link|pack|shift)|utime|values|vec|wait(pid)?|wantarray|warn|write)\>"
color magenta "\<(continue|else|elsif|do|for|foreach|if|unless|until|while|eq|ne|lt|gt|le|ge|cmp|x|my|sub|use|package|can|isa)\>"
icolor cyan start="[$@%]" end="( |[^0-9A-Z_]|-)"
# Variable names.
color cyan "[$%&@]([A-Za-z_][0-9A-Za-z_]*|\^[][A-Z?\^_]|[0-9]+)\>"
color cyan "[$%&@]\{(\^?[A-Za-z_][0-9A-Za-z_]*|\^[][?\^][0-9]+)\}"
color cyan "[$%&@]([][!"#'-.:-?`|~]|\{[][!-/:-@\`|~]\})|\$[$%&@]"
color cyan "(^|[[:space:]])[$%@][/\]"
color yellow "".*"|qq\|.*\|"
color white "[sm]/.*/"
color white start="(^use| = new)" end=";"