[LyX/master] configure: for EPS to PNG, ask ImageMagick to only consider the first image.

[Thibaut Cuvelier]

commit faf0e9ee1396decee9351d3ea8a4bbd362290c79
Author: Thibaut Cuvelier <tcuvelier at lyx.org>
Date:   Sat Feb 19 03:11:55 2022 +0100

    configure: for EPS to PNG, ask ImageMagick to only consider the first image.
    
    Issue discussed in the mailing list: when the EPS contains several images (Adobe Photoshop exports two of them, one being a low-quality TIFF for preview), two files are generated, none with the existing name (prefix: -0 and -1). Hence, LyX thought that there was an error.
---
 lib/configure.py |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/lib/configure.py b/lib/configure.py
index 17ef38f..f81aa3a 100644
--- a/lib/configure.py
+++ b/lib/configure.py
@@ -1174,7 +1174,7 @@ def checkConverterEntries():
     checkProg('an EPS -> PDF converter', ['epstopdf'],
         rc_entry = [ r'\converter eps        pdf6       "epstopdf --outfile=$$o $$i"	""'])
     #
-    checkProg('an EPS -> PNG converter', ['magick $$i $$o', 'convert $$i $$o'],
+    checkProg('an EPS -> PNG converter', ['magick $$i[0] $$o', 'convert $$i[0] $$o'],
         rc_entry = [ r'\converter eps        png        "%%"	""'])
     #
     # no agr -> pdf6 converter, since the pdf library used by gracebat is not