Fix hts_parse_decimal and make synced BCF targets parsing more robust #1396
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The function bcf_sr_regions_init() autodetects the format of input regions,
trying to decide between CHR,POS vs CHR,BEG,END formats. However, the function
hts_parse_decimal() was recognising standalone
G
as0
which resulted inchr1 1234 G
being interpretted aschr1 1234 0
.This commit makes the digit parsing more strict, requiring at least one digit
to appear before the exponent or unit part.
See also samtools/bcftools#1598