how do i search on specific text then from start of the searched line to end of line to replace with ""

SkinMesh
{
    skin = "Art/Models/Effects/monster_effects/League_Affliction/affliction_demon_lightning/lightning_warp/geo.sm"
}

ParticleEffects
{
    animation = "start"
        0 = "midline Metadata/Particles/monster_effects/League_Affliction/affliction_demon_lightning/lightning_warp/marker_start.pet"
    animation = "loop"
        0 = "midline Metadata/Particles/monster_effects/League_Affliction/affliction_demon_lightning/lightning_warp/marker_loop.pet"
    tick_when_not_visible = true
}

What i want to from search/replace is this

SkinMesh
{
}

ParticlesEffects
{
}

Solution

Ctrl+H
Find what: (?:SkinMesh|ParticleEffects)\s+{\K.+?(?=\R})
Replace with: LEAVE EMPTY
CHECK Wrap around
CHECK Regular expression
CHECK . matches newline
Replace all

Explanation:

(?:                 # non capture group
    SkinMesh            # literally
  |                   # OR
    ParticleEffects     # literally
)                   # end group
\s+                 # 1 or more spaces
{                   # opening brace
\K                  # forget all we have seen until this position
.+?                 # 1 or more any character, not greedy
(?=\R})             # positive lookahead, make sure we have a linebreak and a closing brace after

Screenshot (before):

Screenshot (after):