make fsparse, etc. match definitions in Base

[willow-ahrens]

fixes #356

[codecov]

Codecov Report

Attention: 7 lines in your changes are missing coverage. Please review.

Comparison is base (4ab588f) 75.73% compared to head (59cd244) 75.92%.

Files	Patch %	Lines
src/interface/fsparse.jl	78.78%	7 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #361      +/-   ##
==========================================
+ Coverage   75.73%   75.92%   +0.18%     
==========================================
  Files          80       80              
  Lines        6801     6811      +10     
==========================================
+ Hits         5151     5171      +20     
+ Misses       1650     1640      -10     

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