regex101: PCRE (Legacy) Match Workspace

Pro

Group 1(\[expr\s+)

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

exprthe literal text expr (case sensitive)

\s+any whitespace character, repeated at least once

Group 2([^}][^\]]*)

Negated Character Class[^}]

}the literal } (125₁₀ / 175₈ / 7D₁₆)

Negated Character Class[^\]]*

*matches any number of characters outside the set below:

\]the literal ] (93₁₀ / 135₈ / 5D₁₆)

Group 3(\])

\]the literal ] (93₁₀ / 135₈ / 5D₁₆)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

25 tokens

Regular Expression

(\[expr\s+)([^}][^\]]*)(\])

New

set a [expr $sumy+1]
set b [[expr $sumy+1] [expr $sumy+2] [expr $sumy+3]]
set c [expr  $sumy+[lindex $coords 1]]
set d [expr [lindex [$ret] 2] + $Alpha]
set e [string range $SECNAME 0 [expr [string first - $SECNAME] -1] ]


(\[expr\s+)([^}][^\]]*)(\])

Extraction

set a [expr $sumy+1]
set b [[expr $sumy+1] [expr $sumy+2] [expr $sumy+3]]
set c [expr  $sumy+[lindex $coords 1]]
set d [expr [lindex [$ret] 2] + $Alpha]
set e [string range $SECNAME 0 [expr [string first - $SECNAME] -1] ]


(\[expr\s+)([^}][^\]]*)(\])