Bringing pleasure? Awful nightmare about battles! (5-7)

I believe the answer is:

heart-warming

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'bringing pleasure?' is the definition.
I can't tell whether this definition defines the answer.

'awful nightmare about battles' is the wordplay.
'awful' indicates anagramming the letters.
'about' indicates putting letters inside.
'battles' becomes 'war' (I've seen this in other clues).
'nightmare' with letters rearranged gives 'heartming'.
'heartming' going around 'war' is 'HEART-WARMING'.

Can you help me to learn more?

(Other definitions for heart-warming that I've seen before include "Emotionally uplifting" , "Making one feel good" , "Gratifying" .)

I've seen this clue in The Times.

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