Re: st: import excel needs hardcoded first character

[Nick Cox <njcoxstata@gmail.com>]

Yet another reference is

SJ-8-3  pr0042  . . . . . . .  Stata tip 65: Beware the backstabbing backslash
        . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  N. J. Cox
        Q3/08   SJ 8(3):446--447                                 (no commands)
        tip to use forward slash instead of backslash for
        directory and file names

Nick

On Fri, Aug 31, 2012 at 5:33 PM, daniel klein
<klein.daniel.81@googlemail.com> wrote:

> the problem has nothing to do with -import excel-. Stata interprets
> the backslash (\) used as an escape character, causing a so-called
> "delayed macro substitution". For more information read one of
>
> http://www.stata.com/support/faqs/programming/backslashes-and-macros/
> https://profiles.google.com/118088982695968835795/buzz/EoErh7tnVoq
> http://enoriver.net/index.php/2011/02/10/delayed-macro-substitution/
>
> Here is a short demonstration
>
> loc foo foobar
> di "\`foo'" // displays "`foo'"
> di "`foo'" // displays "foobar"
>
> Change
>
> [...] \`fn',clear first case(lower)
>
> to
>
> [...]/`fn',clear first case(lower)
>
> Best
> Daniel
>
> --
> Hello - I am trying to import an excel file with the file name as an argument.
>
> In the first example below, the first character of the file name is
> hard-coded as "t", and I supply the rest of the file name as an
> argument `fn'. The name of my file is "test.xlsx". This works (see
> below).
>
>
> args fn listnumber
> import excel using d:\docume~1\afeiveso\mydocu~1\excel\t`fn',clear
> first case(lower)
>
> . run global_list   est.xlsx 1
>
> [ no errors]
>
>
> Now in the second example, I try to use the entire file name as an
> argument. This does not work.
>
>
> args fn listnumber
> import excel using d:\docume~1\afeiveso\mydocu~1\excel\`fn',clear
> first case(lower)
>
>
> . run global_list   test.xlsx 1
> file d:\docume~1\afeiveso\mydocu~1\excel not found
> r(601);
>
>
>
> With trace on, it appears that Mata ignores the filename and treats it
> as missing. Any ideas of what's going on here?
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