Tweak documentation

README.md

@@ -2,16 +2,23 @@
 
 ```
 $ cabal-add --help
-Usage: cabal-add (-f|--cabal-file FILE) [-c|--component ARG] DEP
+Usage: cabal-add [-f|--cabal-file FILE] [-c|--component ARG] DEP
 
   Extend build-depends from the command line
 
 Available options:
-  -f,--cabal-file FILE     Cabal file to edit in place.
+  -f,--cabal-file FILE     Cabal file to edit in place (tries to detect Cabal
+                           file in current folder if omitted).
   -c,--component ARG       Package component to update (the main library, if
                            omitted). Wildcards such as 'exe', 'test' or 'bench'
                            are supported.
   DEP                      Package(s) to add to build-depends section. Version
                            bounds can be provided as well, use quotes to escape
                            comparisons from your shell. E. g., 'foo < 0.2'.
 ```
+
+`cabal-add` does not have limitations of
+[`cabal-edit`](https://hackage.haskell.org/package/cabal-edit):
+it works on any sectioned Cabal file,
+supports stanzas and conditional blocks,
+and preserves original formatting.

app/Main.hs

@@ -50,7 +50,7 @@ parseRawConfig = do
         long "cabal-file"
           <> short 'f'
           <> metavar "FILE"
-          <> help "Cabal file to edit in place (tries to detect cabal file in current folder if omitted)."
+          <> help "Cabal file to edit in place (tries to detect Cabal file in current folder if omitted)."
   rcnfComponent <-
     optional $
       strOption $

cabal-add.cabal

@@ -11,6 +11,9 @@ description:
     Extend build-depends from the command line.
     Allows to specify Cabal file, target component
     and multiple dependencies with version bounds.
+    It works on any sectioned Cabal file,
+    supports stanzas and conditional blocks,
+    and preserves original formatting.
 
 category:        Development
 build-type:      Simple