[Nano-devel] [PATCH 1/2] shell syntax: major updates

[Mike Frysinger]

Highlight more shell builtins and common commands.

Rewrite the variable highlighting to be more exact and handle cases where
string operations are used.

Signed-off-by: Mike Frysinger <address@hidden>
---
 doc/syntax/sh.nanorc |   13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/doc/syntax/sh.nanorc b/doc/syntax/sh.nanorc
index f660105..a664ef6 100644
--- a/doc/syntax/sh.nanorc
+++ b/doc/syntax/sh.nanorc
@@ -4,12 +4,17 @@ syntax "sh" "\.sh$"
 magic "(POSIX|Bourne.*) shell script text"
 header "^#!.*/(ba|k|pdk)?sh[-0-9_]*"
 icolor brightgreen "^[0-9A-Z_]+\(\)"
-color green 
"\<(case|do|done|elif|else|esac|exit|fi|for|function|if|in|local|read|return|select|shift|then|time|until|while)\>"
-color green "(\{|\}|\(|\)|\;|\]|\[|`|\\|\$|<|>|!|=|&|\|)"
+color green 
"\<(break|case|continue|do|done|elif|else|esac|exit|fi|for|function|if|in|read|return|select|shift|then|time|until|while)\>"
+color green "\<(declare|eval|exec|export|let|local)\>"
+color green "[{}():;|`$<>!=&\\]" "(\]|\[)"
 color green "-[Ldefgruwx]\>"
 color green "-(eq|ne|gt|lt|ge|le|s|n|z)\>"
-color brightblue 
"\<(cat|cd|chmod|chown|cp|echo|env|export|grep|install|let|ln|make|mkdir|mv|rm|sed|set|tar|touch|umask|unset)\>"
-icolor brightred "address@hidden"
+color brightblue 
"\<(awk|cat|cd|ch(grp|mod|own)|cp|echo|env|grep|install|ln|make|mkdir|mv|popd|printf|pushd|rm|rmdir|sed|set|tar|touch|umask|unset)\>"
+# Basic variable names (no braces)
+color brightred "address@hidden" "\$[[:alpha:]_][[:alnum:]_]*"
+# More complicated variable names; handles braces
+# and replacements and arrays
+color brightred 
"\$\{[#!]?(address@hidden|[0-9]+|[[:alpha:]_][[:alnum:]_]*)(\[([[:space:]]*[[:alnum:]_]+[[:space:]]*|@)\])?(([#%/]|:?[-=?+])[^}]*\}|\[|\})"
 color cyan "(^|[[:space:]])#.*$"
 color brightyellow ""(\\.|[^"])*"" "'(\\.|[^'])*'"
 color ,green "[[:space:]]+$"
-- 
1.7.9.7