In Malay there is a syllable-final
-h with some unique properties distinct from the "normal" syllable-initial
h. But in all the accounts of the language I can only see a single symbol used, the regular unadorned
/h/ is pronounced clearly between like vowels, as in Pahang. Elsewhere it is a very light sound, and is frequently silent, as in hutan ~ utan ('forest'), sahut ~ saut ('answer'), like Romance languages. The exception to this tendency is initial /h/ from Arabic loans such as hakim ('judge').
From Lonely Planet Malay Phrasebook, 2nd Edition:
h always pronounced. Stressed a little more strongly than in English, as if you were sighing. This heavy pronunciation is especially evident for words of Arabic origin, when the 'h' appears between two vowels that are the same;
(h) at the end of a word, in brackets, a breathier, slightly prolonged version of the preceding vowel sound
But what options do we have when we want to do narrow transcriptions to illustrate the actual sounds in detail?